diff --git a/include/curl/mprintf.h b/include/curl/mprintf.h
index 8559b1867..e16961ec6 100644
--- a/include/curl/mprintf.h
+++ b/include/curl/mprintf.h
@@ -1,3 +1,5 @@
+#ifndef __CURL_MPRINTF_H
+#define __CURL_MPRINTF_H
 /***************************************************************************
  *                                  _   _ ____  _
  *  Project                     ___| | | |  _ \| |
@@ -21,9 +23,6 @@
  * $Id$
  ***************************************************************************/
 
-#ifndef H_MPRINTF
-#define H_MPRINTF
-
 #include <stdarg.h>
 #include <stdio.h> /* needed for FILE */
 
@@ -53,4 +52,4 @@ CURL_EXTERN char *curl_mvaprintf(const char *format, va_list args);
 # define vaprintf curl_mvaprintf
 #endif
 
-#endif /* H_MPRINTF */
+#endif /* __CURL_MPRINTF_H */