diff --git a/legacy/ecore/src/lib/ecore/ecore_thread.c b/legacy/ecore/src/lib/ecore/ecore_thread.c
index d52c89befb..e24e4c95ca 100644
--- a/legacy/ecore/src/lib/ecore/ecore_thread.c
+++ b/legacy/ecore/src/lib/ecore/ecore_thread.c
@@ -9,9 +9,6 @@
 #ifdef EFL_HAVE_PTHREAD
 # include <pthread.h>
 # ifdef __linux__
-#  ifndef _GNU_SOURCE
-#   define _GNU_SOURCE 1
-#  endif
 #  include <sched.h>
 #  include <sys/time.h>
 #  include <sys/resource.h>