diff --git a/src/session/session.c b/src/session/session.c
index 83810fc2..2a5230cf 100644
--- a/src/session/session.c
+++ b/src/session/session.c
@@ -1,10 +1,5 @@
 /* Sessions managment - you'll find things here which you wouldn't expect */
 
-/* stpcpy */
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif