diff --git a/ext/mysqlnd/mysqlnd.h b/ext/mysqlnd/mysqlnd.h
index c0566d6883b..0bbea9356a4 100644
--- a/ext/mysqlnd/mysqlnd.h
+++ b/ext/mysqlnd/mysqlnd.h
@@ -40,8 +40,8 @@
   on production systems, if of course measured performance degradation is not
   minimal.
 */
-#if PHP_DEBUG
-//#define MYSQLND_DO_WIRE_CHECK_BEFORE_COMMAND 1
+#if A0 && PHP_DEBUG
+#define MYSQLND_DO_WIRE_CHECK_BEFORE_COMMAND 1
 #endif
 
 #if PHP_DEBUG && !defined(PHP_WIN32)