diff --git a/dlls/scrrun/scrrun_private.h b/dlls/scrrun/scrrun_private.h
index a149202b0fe..43b20a9ee50 100644
--- a/dlls/scrrun/scrrun_private.h
+++ b/dlls/scrrun/scrrun_private.h
@@ -16,7 +16,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 #ifndef _SCRRUN_PRIVATE_H_
-#define _SCRRUN_PRIVATE_H
+#define _SCRRUN_PRIVATE_H_
 
 extern HRESULT WINAPI FileSystem_CreateInstance(IClassFactory*,IUnknown*,REFIID,void**) DECLSPEC_HIDDEN;
 extern HRESULT WINAPI Dictionary_CreateInstance(IClassFactory*,IUnknown*,REFIID,void**) DECLSPEC_HIDDEN;