diff --git a/include/leakHunter.h b/include/leakHunter.h
index 243f09ef..4e1ada45 100644
--- a/include/leakHunter.h
+++ b/include/leakHunter.h
@@ -2,7 +2,8 @@
 // This file is part of the "Irrlicht Engine".
 // For conditions of distribution and use, see copyright notice in irrlicht.h
 
-#ifndef __LEAK_HUNTER_INCLUDEED__
+#ifndef __LEAK_HUNTER_INCLUDED__
+#define __LEAK_HUNTER_INCLUDED__
 
 #include "IrrCompileConfig.h"