diff --git a/mozilla/caps/include/nsPrincipalTools.h b/mozilla/caps/include/nsPrincipalTools.h
index eab0d65ddb3..8ca7eb11d20 100644
--- a/mozilla/caps/include/nsPrincipalTools.h
+++ b/mozilla/caps/include/nsPrincipalTools.h
@@ -31,4 +31,4 @@ public:
 	}
 };
 
-#endif _NS_PRINCIPAL_TOOLS_H_
+#endif /* _NS_PRINCIPAL_TOOLS_H_ */