1 files changed, 2 insertions, 2 deletions
diff --git a/time64.h b/time64.h
index 78efc73489..c0657665e9 100644
--- a/time64.h
+++ b/time64.h
@@ -1,8 +1,8 @@
 #include <time.h>
 #include "time64_config.h"
 
-#ifndef TIME64_H
-#    define TIME64_H
+#ifndef PERL_TIME64_H_
+#    define PERL_TIME64_H_
 
 
 /* Set our custom types */