diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 79c7baf..cd05678 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -626,7 +626,7 @@
 	if (conn->flags & CO_FL_ERROR)
 		return 0;
 
-	if (!(conn->flags & CO_FL_CTRL_READY))
+	if (!conn_ctrl_ready(conn))
 		return 0;
 
 	if (!(conn->flags & CO_FL_WAIT_L4_CONN))