diff --git a/include/boost/redis/detail/connection_base.hpp b/include/boost/redis/detail/connection_base.hpp
index 69ae68ca..487c759f 100644
--- a/include/boost/redis/detail/connection_base.hpp
+++ b/include/boost/redis/detail/connection_base.hpp
@@ -113,7 +113,7 @@ struct exec_op {
    asio::coroutine coro{};
 
    template <class Self>
-   void operator()(Self& self , system::error_code ec = {}, std::size_t = 0)
+   void operator()(Self& self , system::error_code = {}, std::size_t = 0)
    {
       BOOST_ASIO_CORO_REENTER (coro)
       {