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-rw-r--r--byterun/sys.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/byterun/sys.h b/byterun/sys.h
index a732611ee..f0e2582e5 100644
--- a/byterun/sys.h
+++ b/byterun/sys.h
@@ -13,8 +13,8 @@
/* $Id$ */
-#ifndef _sys_
-#define _sys_
+#ifndef CAML_SYS_H
+#define CAML_SYS_H
#include "misc.h"
@@ -26,4 +26,4 @@ CAMLextern value sys_exit (value);
extern char * caml_exe_name;
-#endif /* _sys_ */
+#endif /* CAML_SYS_H */