diff --git a/legacy/eina/src/lib/eina_strbuf_common.c b/legacy/eina/src/lib/eina_strbuf_common.c
index 964361436a..f9e0e018cf 100644
--- a/legacy/eina/src/lib/eina_strbuf_common.c
+++ b/legacy/eina/src/lib/eina_strbuf_common.c
@@ -1,9 +1,9 @@
-#define _GNU_SOURCE
-
 #ifdef HAVE_CONFIG_H
 # include "config.h"
 #endif
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>