diff --git a/test/http/server_sent_event_test.cpp b/test/http/server_sent_event_test.cpp
index 3e740cb..7400779 100644
--- a/test/http/server_sent_event_test.cpp
+++ b/test/http/server_sent_event_test.cpp
@@ -34,7 +34,7 @@
 
     std::shared_ptr<ConnectionImpl<boost::beast::test::stream>> conn =
         std::make_shared<ConnectionImpl<boost::beast::test::stream>>(
-            io, std::move(stream), openHandler, closeHandler);
+            std::move(stream), openHandler, closeHandler);
     conn->start();
     // Connect
     {