diff --git a/youtubeUnblock.c b/youtubeUnblock.c
index a3203ff..79dc9b3 100644
--- a/youtubeUnblock.c
+++ b/youtubeUnblock.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <libnetfilter_queue/linux_nfnetlink_queue.h>
 #include <stdio.h>
 #include <errno.h>