diff --git a/kernel/compatibility.h b/kernel/compatibility.h
index 58e0b52e9..c7603c8a5 100644
--- a/kernel/compatibility.h
+++ b/kernel/compatibility.h
@@ -20,10 +20,11 @@
 #ifndef COMPATIBILITY_H
 #define COMPATIBILITY_H
 
-#if !(_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L)
 #include <stdio.h>
 #include <stdlib.h>
 
+#if !(_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L)
+
 #define open_memstream compat_open_memstream
 #define fmemopen compat_fmemopen