diff --git a/include/boost/mysql/detail/network_algorithms/close_statement.hpp b/include/boost/mysql/detail/network_algorithms/close_statement.hpp
index b06651bc..a0ce18ec 100644
--- a/include/boost/mysql/detail/network_algorithms/close_statement.hpp
+++ b/include/boost/mysql/detail/network_algorithms/close_statement.hpp
@@ -11,7 +11,7 @@ template <typename StreamType>
 void close_statement(
 	channel<StreamType>& chan,
 	std::uint32_t statement_id,
-	error_code& errc,
+	error_code& code,
 	error_info& info
 );
 
diff --git a/include/boost/mysql/detail/network_algorithms/impl/close_statement.hpp b/include/boost/mysql/detail/network_algorithms/impl/close_statement.hpp
index 35085801..97a6c1ee 100644
--- a/include/boost/mysql/detail/network_algorithms/impl/close_statement.hpp
+++ b/include/boost/mysql/detail/network_algorithms/impl/close_statement.hpp
@@ -8,7 +8,7 @@ template <typename StreamType>
 void boost::mysql::detail::close_statement(
 	channel<StreamType>& chan,
 	std::uint32_t statement_id,
-	error_code& errc,
+	error_code& code,
 	error_info&
 )
 {
@@ -20,7 +20,7 @@ void boost::mysql::detail::close_statement(
 
 	// Send it. No response is sent back
 	chan.reset_sequence_number();
-	chan.write(boost::asio::buffer(chan.shared_buffer()), errc);
+	chan.write(boost::asio::buffer(chan.shared_buffer()), code);
 }
 
 template <typename StreamType, typename CompletionToken>
diff --git a/include/boost/mysql/detail/network_algorithms/impl/handshake.hpp b/include/boost/mysql/detail/network_algorithms/impl/handshake.hpp
index d0cbc8b5..53b65d4b 100644
--- a/include/boost/mysql/detail/network_algorithms/impl/handshake.hpp
+++ b/include/boost/mysql/detail/network_algorithms/impl/handshake.hpp
@@ -306,10 +306,10 @@ boost::mysql::detail::async_handshake(
 		{
 		}
 
-		void complete(bool cont, error_code errc)
+		void complete(bool cont, error_code code)
 		{
 			channel_.set_current_capabilities(processor_.negotiated_capabilities());
-			BaseType::complete(cont, errc, std::move(info_));
+			BaseType::complete(cont, code, std::move(info_));
 		}
 
 		void operator()(
diff --git a/include/boost/mysql/detail/protocol/channel.hpp b/include/boost/mysql/detail/protocol/channel.hpp
index 0569cfe1..7e02748f 100644
--- a/include/boost/mysql/detail/protocol/channel.hpp
+++ b/include/boost/mysql/detail/protocol/channel.hpp
@@ -32,9 +32,9 @@ public:
 	channel(AsyncStream& stream): next_layer_ {stream} {};
 
 	template <typename Allocator>
-	void read(basic_bytestring<Allocator>& buffer, error_code& errc);
+	void read(basic_bytestring<Allocator>& buffer, error_code& code);
 
-	void write(boost::asio::const_buffer buffer, error_code& errc);
+	void write(boost::asio::const_buffer buffer, error_code& code);
 
 	template <typename Allocator, typename CompletionToken>
 	BOOST_ASIO_INITFN_RESULT_TYPE(CompletionToken, void(error_code))
diff --git a/include/boost/mysql/detail/protocol/impl/channel.hpp b/include/boost/mysql/detail/protocol/impl/channel.hpp
index b7c21433..796aa4c4 100644
--- a/include/boost/mysql/detail/protocol/impl/channel.hpp
+++ b/include/boost/mysql/detail/protocol/impl/channel.hpp
@@ -77,31 +77,31 @@ template <typename AsyncStream>
 template <typename Allocator>
 void boost::mysql::detail::channel<AsyncStream>::read(
 	basic_bytestring<Allocator>& buffer,
-	error_code& errc
+	error_code& code
 )
 {
 	std::size_t transferred_size = 0;
 	std::uint32_t size_to_read = 0;
 	buffer.clear();
-	errc.clear();
+	code.clear();
 
 	do
 	{
 		boost::asio::read(
 			next_layer_,
 			boost::asio::buffer(header_buffer_),
-			errc
+			code
 		);
-		if (errc) return;
-		errc = process_header_read(size_to_read);
-		if (errc) return;
+		if (code) return;
+		code = process_header_read(size_to_read);
+		if (code) return;
 		buffer.resize(buffer.size() + size_to_read);
 		boost::asio::read(
 			next_layer_,
 			boost::asio::buffer(buffer.data() + transferred_size, size_to_read),
-			errc
+			code
 		);
-		if (errc) return;
+		if (code) return;
 		transferred_size += size_to_read;
 	} while (size_to_read == MAX_PACKET_SIZE);
 }
@@ -109,7 +109,7 @@ void boost::mysql::detail::channel<AsyncStream>::read(
 template <typename AsyncStream>
 void boost::mysql::detail::channel<AsyncStream>::write(
 	boost::asio::const_buffer buffer,
-	error_code& errc
+	error_code& code
 )
 {
 	std::size_t transferred_size = 0;
@@ -128,9 +128,9 @@ void boost::mysql::detail::channel<AsyncStream>::write(
 				boost::asio::buffer(header_buffer_),
 				boost::asio::buffer(first + transferred_size, size_to_write)
 			},
-			errc
+			code
 		);
-		if (errc) return;
+		if (code) return;
 		transferred_size += size_to_write;
 	} while (transferred_size < bufsize);
 }
@@ -168,7 +168,7 @@ boost::mysql::detail::channel<AsyncStream>::async_read(
 		}
 
 		void operator()(
-			error_code errc,
+			error_code code,
 			std::size_t bytes_transferred,
 			bool cont=true
 		)
@@ -185,17 +185,17 @@ boost::mysql::detail::channel<AsyncStream>::async_read(
 						std::move(*this)
 					);
 
-					if (errc)
+					if (code)
 					{
-						this->complete(cont, errc);
+						this->complete(cont, code);
 						yield break;
 					}
 
-					errc = stream_.process_header_read(size_to_read);
+					code = stream_.process_header_read(size_to_read);
 
-					if (errc)
+					if (code)
 					{
-						this->complete(cont, errc);
+						this->complete(cont, code);
 						yield break;
 					}
 
@@ -207,9 +207,9 @@ boost::mysql::detail::channel<AsyncStream>::async_read(
 						std::move(*this)
 					);
 
-					if (errc)
+					if (code)
 					{
-						this->complete(cont, errc);
+						this->complete(cont, code);
 						yield break;
 					}
 
@@ -258,7 +258,7 @@ boost::mysql::detail::channel<AsyncStream>::async_write(
 		}
 
 		void operator()(
-			error_code errc,
+			error_code code,
 			std::size_t bytes_transferred,
 			bool cont=true
 		)
@@ -282,9 +282,9 @@ boost::mysql::detail::channel<AsyncStream>::async_write(
 						std::move(*this)
 					);
 
-					if (errc)
+					if (code)
 					{
-						this->complete(cont, errc);
+						this->complete(cont, code);
 						yield break;
 					}
 
diff --git a/include/boost/mysql/detail/protocol/impl/messages.ipp b/include/boost/mysql/detail/protocol/impl/messages.ipp
index ffee07a7..5c84866b 100644
--- a/include/boost/mysql/detail/protocol/impl/messages.ipp
+++ b/include/boost/mysql/detail/protocol/impl/messages.ipp
@@ -352,8 +352,8 @@ inline boost::mysql::error_code boost::mysql::detail::process_error_packet(
 )
 {
 	err_packet error_packet;
-	auto errc = deserialize_message(error_packet, ctx);
-	if (errc) return errc;
+	auto code = deserialize_message(error_packet, ctx);
+	if (code) return code;
 	info.set_message(std::string(error_packet.error_message.value));
 	return make_error_code(static_cast<Error>(error_packet.error_code.value));
 }
diff --git a/include/boost/mysql/impl/connection.hpp b/include/boost/mysql/impl/connection.hpp
index 1250b3d4..de80a022 100644
--- a/include/boost/mysql/impl/connection.hpp
+++ b/include/boost/mysql/impl/connection.hpp
@@ -29,16 +29,16 @@ inline handshake_params to_handshake_params(
 template <typename Stream>
 void boost::mysql::connection<Stream>::handshake(
 	const connection_params& params,
-	error_code& errc,
+	error_code& code,
 	error_info& info
 )
 {
-	errc.clear();
+	code.clear();
 	info.clear();
 	detail::hanshake(
 		channel_,
 		detail::to_handshake_params(params),
-		errc,
+		code,
 		info
 	);
 	// TODO: should we close() the stream in case of error?
@@ -49,10 +49,10 @@ void boost::mysql::connection<Stream>::handshake(
 	const connection_params& params
 )
 {
-	error_code errc;
+	error_code code;
 	error_info info;
-	handshake(params, errc, info);
-	detail::check_error_code(errc, info);
+	handshake(params, code, info);
+	detail::check_error_code(code, info);
 }
 
 template <typename Stream>
diff --git a/include/boost/mysql/impl/error.hpp b/include/boost/mysql/impl/error.hpp
index a7b26c91..b1974868 100644
--- a/include/boost/mysql/impl/error.hpp
+++ b/include/boost/mysql/impl/error.hpp
@@ -53,11 +53,11 @@ inline boost::system::error_code make_error_code(Error error)
 	return boost::system::error_code(static_cast<int>(error), mysql_error_category);
 }
 
-inline void check_error_code(const error_code& errc, const error_info& info)
+inline void check_error_code(const error_code& code, const error_info& info)
 {
-	if (errc)
+	if (code)
 	{
-		throw boost::system::system_error(errc, info.message());
+		throw boost::system::system_error(code, info.message());
 	}
 }
 
diff --git a/include/boost/mysql/impl/prepared_statement.hpp b/include/boost/mysql/impl/prepared_statement.hpp
index 2ebcb312..a41fa31b 100644
--- a/include/boost/mysql/impl/prepared_statement.hpp
+++ b/include/boost/mysql/impl/prepared_statement.hpp
@@ -111,24 +111,24 @@ auto boost::mysql::prepared_statement<StreamType>::async_execute(
 
 template <typename StreamType>
 void boost::mysql::prepared_statement<StreamType>::close(
-	error_code& errc,
+	error_code& code,
 	error_info& info
 )
 {
 	assert(valid());
-	errc.clear();
+	code.clear();
 	info.clear();
-	detail::close_statement(*channel_, id(), errc, info);
+	detail::close_statement(*channel_, id(), code, info);
 }
 
 template <typename StreamType>
 void boost::mysql::prepared_statement<StreamType>::close()
 {
 	assert(valid());
-	error_code errc;
+	error_code code;
 	error_info info;
-	detail::close_statement(*channel_, id(), errc, info);
-	detail::check_error_code(errc, info);
+	detail::close_statement(*channel_, id(), code, info);
+	detail::check_error_code(code, info);
 }
 
 template <typename StreamType>
diff --git a/include/boost/mysql/impl/resultset.hpp b/include/boost/mysql/impl/resultset.hpp
index 8872285c..fd76e728 100644
--- a/include/boost/mysql/impl/resultset.hpp
+++ b/include/boost/mysql/impl/resultset.hpp
@@ -39,10 +39,10 @@ const boost::mysql::row* boost::mysql::resultset<StreamType>::fetch_one(
 template <typename StreamType>
 const boost::mysql::row* boost::mysql::resultset<StreamType>::fetch_one()
 {
-	error_code errc;
+	error_code code;
 	error_info info;
-	const row* res = fetch_one(errc, info);
-	detail::check_error_code(errc, info);
+	const row* res = fetch_one(code, info);
+	detail::check_error_code(code, info);
 	return res;
 }
 
@@ -97,10 +97,10 @@ std::vector<boost::mysql::owning_row> boost::mysql::resultset<StreamType>::fetch
 	std::size_t count
 )
 {
-	error_code errc;
+	error_code code;
 	error_info info;
-	auto res = fetch_many(count, errc, info);
-	detail::check_error_code(errc, info);
+	auto res = fetch_many(count, code, info);
+	detail::check_error_code(code, info);
 	return res;
 }
 
diff --git a/test/integration/integration_test_common.hpp b/test/integration/integration_test_common.hpp
index c683252b..416dccbe 100644
--- a/test/integration/integration_test_common.hpp
+++ b/test/integration/integration_test_common.hpp
@@ -41,8 +41,8 @@ struct IntegTest : testing::Test
 
 	~IntegTest()
 	{
-		error_code errc;
-		conn.next_level().close(errc);
+		error_code code;
+		conn.next_level().close(code);
 		guard.reset();
 		runner.join();
 	}
diff --git a/test/integration/network_functions.cpp b/test/integration/network_functions.cpp
index 9b34d0a2..5fea4c64 100644
--- a/test/integration/network_functions.cpp
+++ b/test/integration/network_functions.cpp
@@ -34,8 +34,8 @@ public:
 		const boost::mysql::connection_params& params
 	) override
 	{
-		return impl([&](error_code& errc, error_info& info) {
-			conn.handshake(params, errc, info);
+		return impl([&](error_code& code, error_info& info) {
+			conn.handshake(params, code, info);
 			return no_result();
 		});
 	}
@@ -44,8 +44,8 @@ public:
 		std::string_view query
 	) override
 	{
-		return impl([&](error_code& errc, error_info& info) {
-			return conn.query(query, errc, info);
+		return impl([&](error_code& code, error_info& info) {
+			return conn.query(query, code, info);
 		});
 	}
 	network_result<tcp_prepared_statement> prepare_statement(
@@ -80,8 +80,8 @@ public:
 		tcp_prepared_statement& stmt
 	) override
 	{
-		return impl([&](error_code& errc, error_info& info) {
-			stmt.close(errc, info);
+		return impl([&](error_code& code, error_info& info) {
+			stmt.close(code, info);
 			return no_result();
 		});
 	}
@@ -89,8 +89,8 @@ public:
 		tcp_resultset& r
 	) override
 	{
-		return impl([&](error_code& errc, error_info& info) {
-			return r.fetch_one(errc, info);
+		return impl([&](error_code& code, error_info& info) {
+			return r.fetch_one(code, info);
 		});
 	}
 	network_result<std::vector<owning_row>> fetch_many(
@@ -98,16 +98,16 @@ public:
 		std::size_t count
 	) override
 	{
-		return impl([&](error_code& errc, error_info& info) {
-			return r.fetch_many(count, errc, info);
+		return impl([&](error_code& code, error_info& info) {
+			return r.fetch_many(count, code, info);
 		});
 	}
 	network_result<std::vector<owning_row>> fetch_all(
 		tcp_resultset& r
 	) override
 	{
-		return impl([&](error_code& errc, error_info& info) {
-			return r.fetch_all(errc, info);
+		return impl([&](error_code& code, error_info& info) {
+			return r.fetch_all(code, info);
 		});
 	}
 };
@@ -219,8 +219,8 @@ class async : public network_functions
 	template <typename R, typename Callable>
 	static network_result<R> impl(Callable&& cb) {
 		std::promise<network_result<R>> prom;
-		cb([&prom](error_code errc, error_info info, auto retval) {
-			prom.set_value(network_result<R>{errc, std::move(info), std::move(retval)});
+		cb([&prom](error_code code, error_info info, auto retval) {
+			prom.set_value(network_result<R>{code, std::move(info), std::move(retval)});
 		});
 		return prom.get_future().get();
 	}
@@ -228,8 +228,8 @@ class async : public network_functions
 	template <typename Callable>
 	static network_result<no_result> impl_no_result(Callable&& cb) {
 		std::promise<network_result<no_result>> prom;
-		cb([&prom](error_code errc, error_info info) {
-			prom.set_value(network_result<no_result>{errc, std::move(info), no_result()});
+		cb([&prom](error_code code, error_info info) {
+			prom.set_value(network_result<no_result>{code, std::move(info), no_result()});
 		});
 		return prom.get_future().get();
 	}
diff --git a/test/integration/prepare_statement.cpp b/test/integration/prepare_statement.cpp
index fa41ae25..96099866 100644
--- a/test/integration/prepare_statement.cpp
+++ b/test/integration/prepare_statement.cpp
@@ -21,7 +21,6 @@ struct PrepareStatementTest : public NetworkTest<>
 {
 };
 
-// sync errc
 TEST_P(PrepareStatementTest, OkNoParams)
 {
 	auto stmt = GetParam()->prepare_statement(conn, "SELECT * FROM empty_table");
diff --git a/test/unit/detail/protocol/channel.cpp b/test/unit/detail/protocol/channel.cpp
index 427cde77..ce959ed8 100644
--- a/test/unit/detail/protocol/channel.cpp
+++ b/test/unit/detail/protocol/channel.cpp
@@ -114,7 +114,7 @@ struct MysqlChannelFixture : public Test
 	using MockChannel = channel<NiceMock<MockStream>>;
 	NiceMock<MockStream> stream;
 	MockChannel chan {stream};
-	error_code errc;
+	error_code code;
 	InSequence seq;
 
 	MysqlChannelFixture()
@@ -173,8 +173,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_AllReadsSuccessful_ReadHeaderPopulatesBuff
 		0x03, 0x00, 0x00, 0x00,
 		0xfe, 0x03, 0x02
 	};
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, error_code());
+	chan.read(buffer, code);
+	EXPECT_EQ(code, error_code());
 	verify_buffer({0xfe, 0x03, 0x02});
 }
 
@@ -188,8 +188,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_MoreThan16M_JoinsPackets)
 	concat(bytes_to_read, std::vector<uint8_t>(0xffffff, 0x20));
 	concat(bytes_to_read, {0x04, 0x00, 0x00, 0x02});
 	concat(bytes_to_read, {0x20, 0x20, 0x20, 0x20});
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, error_code());
+	chan.read(buffer, code);
+	EXPECT_EQ(code, error_code());
 	verify_buffer(std::vector<uint8_t>(0xffffff * 2 + 4, 0x20));
 }
 
@@ -198,8 +198,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_EmptyPacket_LeavesBufferEmpty)
 	ON_CALL(stream, read_buffer)
 		.WillByDefault(Invoke(make_read_handler()));
 	concat(bytes_to_read, {0x00, 0x00, 0x00, 0x00});
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, error_code());
+	chan.read(buffer, code);
+	EXPECT_EQ(code, error_code());
 	verify_buffer(std::vector<uint8_t>{});
 }
 
@@ -210,8 +210,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_ShortReads_InvokesReadAgain)
 		.WillOnce(Invoke(buffer_copier({     0x00, 0x00, 0x00})))
 		.WillOnce(Invoke(buffer_copier({0x01, 0x02})))
 		.WillOnce(Invoke(buffer_copier({0x03, 0x04})));
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, error_code());
+	chan.read(buffer, code);
+	EXPECT_EQ(code, error_code());
 	verify_buffer({0x01, 0x02, 0x03, 0x04});
 }
 
@@ -220,8 +220,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_ReadErrorInHeader_ReturnsFailureErrorCode)
 	auto expected_error = errc::make_error_code(errc::not_supported);
 	EXPECT_CALL(stream, read_buffer)
 		.WillOnce(Invoke(read_failer(expected_error)));
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, expected_error);
+	chan.read(buffer, code);
+	EXPECT_EQ(code, expected_error);
 }
 
 TEST_F(MysqlChannelReadTest, SyncRead_ReadErrorInPacket_ReturnsFailureErrorCode)
@@ -230,8 +230,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_ReadErrorInPacket_ReturnsFailureErrorCode)
 	EXPECT_CALL(stream, read_buffer)
 		.WillOnce(Invoke(buffer_copier({0xff, 0xff, 0xff, 0x00})))
 		.WillOnce(Invoke(read_failer(expected_error)));
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, expected_error);
+	chan.read(buffer, code);
+	EXPECT_EQ(code, expected_error);
 }
 
 TEST_F(MysqlChannelReadTest, SyncRead_SequenceNumberMismatch_ReturnsAppropriateErrorCode)
@@ -239,8 +239,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_SequenceNumberMismatch_ReturnsAppropriateE
 	ON_CALL(stream, read_buffer)
 		.WillByDefault(Invoke(make_read_handler()));
 	bytes_to_read = {0xff, 0xff, 0xff, 0x05};
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, make_error_code(Error::sequence_number_mismatch));
+	chan.read(buffer, code);
+	EXPECT_EQ(code, make_error_code(Error::sequence_number_mismatch));
 }
 
 TEST_F(MysqlChannelReadTest, SyncRead_SequenceNumberNotZero_RespectsCurrentSequenceNumber)
@@ -252,8 +252,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_SequenceNumberNotZero_RespectsCurrentSeque
 		0xfe, 0x03, 0x02
 	};
 	chan.reset_sequence_number(0x21);
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, error_code());
+	chan.read(buffer, code);
+	EXPECT_EQ(code, error_code());
 	verify_buffer({0xfe, 0x03, 0x02});
 	EXPECT_EQ(chan.sequence_number(), 0x22);
 }
@@ -267,8 +267,8 @@ TEST_F(MysqlChannelReadTest, SyncRead_SequenceNumberFF_SequenceNumberWraps)
 		0xfe, 0x03, 0x02
 	};
 	chan.reset_sequence_number(0xff);
-	chan.read(buffer, errc);
-	EXPECT_EQ(errc, error_code());
+	chan.read(buffer, code);
+	EXPECT_EQ(code, error_code());
 	verify_buffer({0xfe, 0x03, 0x02});
 	EXPECT_EQ(chan.sequence_number(), 0);
 }
@@ -306,19 +306,19 @@ TEST_F(MysqlChannelWriteTest, SyncWrite_AllWritesSuccessful_WritesHeaderAndBuffe
 {
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(make_write_handler()));
-	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), errc);
+	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), code);
 	verify_buffer({
 		0x03, 0x00, 0x00, 0x00, // header
 		0xaa, 0xab, 0xac // body
 	});
-	EXPECT_EQ(errc, error_code());
+	EXPECT_EQ(code, error_code());
 }
 
 TEST_F(MysqlChannelWriteTest, SyncWrite_MoreThan16M_SplitsInPackets)
 {
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(make_write_handler()));
-	chan.write(buffer(std::vector<uint8_t>(2*0xffffff + 4, 0xab)), errc);
+	chan.write(buffer(std::vector<uint8_t>(2*0xffffff + 4, 0xab)), code);
 	std::vector<uint8_t> expected_buffer {0xff, 0xff, 0xff, 0x00};
 	concat(expected_buffer, std::vector<std::uint8_t>(0xffffff, 0xab));
 	concat(expected_buffer, {0xff, 0xff, 0xff, 0x01});
@@ -326,7 +326,7 @@ TEST_F(MysqlChannelWriteTest, SyncWrite_MoreThan16M_SplitsInPackets)
 	concat(expected_buffer, {0x04, 0x00, 0x00, 0x02});
 	concat(expected_buffer, std::vector<std::uint8_t>(4, 0xab));
 	verify_buffer(expected_buffer);
-	EXPECT_EQ(errc, error_code());
+	EXPECT_EQ(code, error_code());
 }
 
 TEST_F(MysqlChannelWriteTest, SyncWrite_EmptyPacket_WritesHeader)
@@ -334,29 +334,29 @@ TEST_F(MysqlChannelWriteTest, SyncWrite_EmptyPacket_WritesHeader)
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(make_write_handler()));
 	chan.reset_sequence_number(2);
-	chan.write(buffer(std::vector<uint8_t>{}), errc);
+	chan.write(buffer(std::vector<uint8_t>{}), code);
 	verify_buffer({0x00, 0x00, 0x00, 0x02});
-	EXPECT_EQ(errc, error_code());
+	EXPECT_EQ(code, error_code());
 }
 
 TEST_F(MysqlChannelWriteTest, SyncWrite_ShortWrites_WritesHeaderAndBuffer)
 {
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(make_write_handler(2)));
-	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), errc);
+	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), code);
 	verify_buffer({
 		0x03, 0x00, 0x00, 0x00, // header
 		0xaa, 0xab, 0xac // body
 	});
-	EXPECT_EQ(errc, error_code());
+	EXPECT_EQ(code, error_code());
 }
 
 TEST_F(MysqlChannelWriteTest, SyncWrite_WriteErrorInHeader_ReturnsErrorCode)
 {
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(write_failer(errc::broken_pipe)));
-	chan.write(buffer(std::vector<uint8_t>(10, 0x01)), errc);
-	EXPECT_EQ(errc, errc::make_error_code(errc::broken_pipe));
+	chan.write(buffer(std::vector<uint8_t>(10, 0x01)), code);
+	EXPECT_EQ(code, errc::make_error_code(errc::broken_pipe));
 }
 
 TEST_F(MysqlChannelWriteTest, SyncWrite_WriteErrorInPacket_ReturnsErrorCode)
@@ -364,8 +364,8 @@ TEST_F(MysqlChannelWriteTest, SyncWrite_WriteErrorInPacket_ReturnsErrorCode)
 	EXPECT_CALL(stream, write_buffer)
 		.WillOnce(Return(4))
 		.WillOnce(Invoke(write_failer(errc::broken_pipe)));
-	chan.write(buffer(std::vector<uint8_t>(10, 0x01)), errc);
-	EXPECT_EQ(errc, errc::make_error_code(errc::broken_pipe));
+	chan.write(buffer(std::vector<uint8_t>(10, 0x01)), code);
+	EXPECT_EQ(code, errc::make_error_code(errc::broken_pipe));
 }
 
 TEST_F(MysqlChannelWriteTest, SyncWrite_SequenceNumberNotZero_RespectsSequenceNumber)
@@ -373,12 +373,12 @@ TEST_F(MysqlChannelWriteTest, SyncWrite_SequenceNumberNotZero_RespectsSequenceNu
 	chan.reset_sequence_number(0xab);
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(make_write_handler()));
-	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), errc);
+	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), code);
 	verify_buffer({
 		0x03, 0x00, 0x00, 0xab, // header
 		0xaa, 0xab, 0xac // body
 	});
-	EXPECT_EQ(errc, error_code());
+	EXPECT_EQ(code, error_code());
 	EXPECT_EQ(chan.sequence_number(), 0xac);
 }
 
@@ -387,12 +387,12 @@ TEST_F(MysqlChannelWriteTest, SyncWrite_SequenceIsFF_WrapsSequenceNumber)
 	chan.reset_sequence_number(0xff);
 	ON_CALL(stream, write_buffer)
 		.WillByDefault(Invoke(make_write_handler()));
-	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), errc);
+	chan.write(buffer(std::vector<uint8_t>{0xaa, 0xab, 0xac}), code);
 	verify_buffer({
 		0x03, 0x00, 0x00, 0xff, // header
 		0xaa, 0xab, 0xac // body
 	});
-	EXPECT_EQ(errc, error_code());
+	EXPECT_EQ(code, error_code());
 	EXPECT_EQ(chan.sequence_number(), 0);
 }