diff --git a/tools/StyleGuide.h b/tools/StyleGuide.h
index f43b57c..99c152c 100755
--- a/tools/StyleGuide.h
+++ b/tools/StyleGuide.h
@@ -1,6 +1,12 @@
 #ifndef NAMESPACE_FILENAME_H__
 #define NAMESPACE_FILENAME_H__
 
+#include <standard_library>
+
+#include <external_dependency>
+
+#include "Internal/Header.h"
+
 namespace dd
 {