--- a/md5.h	Sat Sep 17 13:57:01 2005 +0000
+++ b/md5.h	Sun Sep 18 20:56:44 2005 +0000
@@ -49,8 +49,8 @@
   1999-05-03 lpd Original version.
  */
 
-#ifndef md5_INCLUDED
-#  define md5_INCLUDED
+#ifndef MD5_INCLUDED
+#define MD5_INCLUDED
 
 /*
  * This package supports both compile-time and run-time determination of CPU
@@ -90,4 +90,4 @@
 }  /* end extern "C" */
 #endif
 
-#endif /* md5_INCLUDED */
+#endif /* MD5_INCLUDED */