diff --git a/ext/mysqlnd/php_mysqlnd.c b/ext/mysqlnd/php_mysqlnd.c
index ff31a54b454f..dd7ded12c206 100644
--- a/ext/mysqlnd/php_mysqlnd.c
+++ b/ext/mysqlnd/php_mysqlnd.c
@@ -15,6 +15,9 @@
   +----------------------------------------------------------------------+
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "php.h"
 #include "mysqlnd.h"
 #include "mysqlnd_priv.h"