diff --git a/src/include/switch.h b/src/include/switch.h
index 89a79f1ee6..0b1ff4c8e9 100644
--- a/src/include/switch.h
+++ b/src/include/switch.h
@@ -56,7 +56,7 @@
 #ifndef MACOSX
 #if !defined(_XOPEN_SOURCE) && !defined(__OpenBSD__) && !defined(__NetBSD__)
 #ifndef __cplusplus
-#define _XOPEN_SOURCE 600
+#define _XOPEN_SOURCE 700
 #endif
 #endif
 #ifdef __linux__