https://github.com/ImageMagick/ImageMagick/issues/194
diff --git a/MagickCore/profile.h b/MagickCore/profile.h
index 4c830b5..391fbe7 100644
--- a/MagickCore/profile.h
+++ b/MagickCore/profile.h
@@ -15,8 +15,8 @@
 
   MagickCore image profile methods.
 */
-#ifndef _MAGICKCORE_PROFILE_H
-#define _MAGICKCORE_PROFILE_H
+#ifndef MAGICKCORE_PROFILE_H
+#define MAGICKCORE_PROFILE_H
 
 #include "MagickCore/string_.h"