diff --git a/mpd_ws.c b/mpd_ws.c
index f976f8d..a12a6f7 100644
--- a/mpd_ws.c
+++ b/mpd_ws.c
@@ -1,4 +1,3 @@
-#define _GNU_SOURCE
 #include "mpd_ws.h"
 #include <signal.h>
 #include <stdio.h>