diff --git a/src/utils/utils.c b/src/utils/utils.c
index c1768afdbbf389ffffa341e7852e0922b9d565bd..7756efcb78054ac1f6022a1a93c4545dbf03e5c3 100644
--- a/src/utils/utils.c
+++ b/src/utils/utils.c
@@ -7,12 +7,11 @@
  *
  */
 
+#define _DEFAULT_SOURCE
+#define _XOPEN_SOURCE
 #include <stdio.h>
 #include <string.h>
 #include <signal.h>
-#ifndef __GLIBC__
-#define __USE_XOPEN
-#endif
 #include <time.h>
 #include <unistd.h>
 #include <sys/types.h>