diff --git a/cpu/native/mtarch.c b/cpu/native/mtarch.c
index 5bb01a0cc..e9df427d0 100644
--- a/cpu/native/mtarch.c
+++ b/cpu/native/mtarch.c
@@ -40,7 +40,12 @@
 
 static void *main_fiber;
 
-#elif defined(__linux)
+#elif defined(__linux) || defined(__APPLE__)
+
+#ifdef __APPLE__
+/* Avoid deprecated error on Darwin */
+#define _XOPEN_SOURCE
+#endif
 
 #include <stdlib.h>
 #include <signal.h>