diff --git a/tools/libevdev-tweak-device.c b/tools/libevdev-tweak-device.c
index daadf61..e3529d8 100644
--- a/tools/libevdev-tweak-device.c
+++ b/tools/libevdev-tweak-device.c
@@ -20,7 +20,6 @@
  * OF THIS SOFTWARE.
  */
 
-#define _GNU_SOURCE
 #include "config.h"
 
 #include <getopt.h>