diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index d364651d..8f511d91 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -54,7 +54,7 @@ add_executable(
     unit/rows_view.cpp
     unit/rows.cpp
     unit/metadata.cpp
-    # unit/error.cpp
+    unit/error.cpp
     # unit/execute_params.cpp
     # unit/prepared_statement.cpp
     # unit/resultset.cpp
diff --git a/test/unit/error.cpp b/test/unit/error.cpp
index 49245711..f97296ca 100644
--- a/test/unit/error.cpp
+++ b/test/unit/error.cpp
@@ -6,12 +6,13 @@
 //
 
 #include <boost/mysql/error.hpp>
+#include <boost/mysql/detail/auxiliar/stringize.hpp>
 #include "test_common.hpp"
 
 using boost::mysql::errc;
 using boost::mysql::detail::error_to_string;
+using boost::mysql::detail::stringize;
 using boost::mysql::error_info;
-using boost::mysql::test::stringize;
 
 BOOST_AUTO_TEST_SUITE(test_error)