1 files changed, 6 insertions, 2 deletions
diff --git a/stddef.h b/stddef.h
index 03f648d..637499c 100644
--- a/stddef.h
+++ b/stddef.h
@@ -1,5 +1,9 @@
-#ifndef __STDDEF_H__
-#define __STDDEF_H__
+#ifndef __STDC_VERSION_STDDEF_H__
+#if defined __STDC_VERSION__
+#define __STDC_VERSION_STDDEF_H__ __STDC_VERSION__
+#else
+#define __STDC_VERSION_STDDEF_H__ 1
+#endif
 
 /*
 UNG's Not GNU