diff --git a/newgrf_cargo.c b/newgrf_cargo.c
index f60e9839fd..38b2a5a3ab 100644
--- a/newgrf_cargo.c
+++ b/newgrf_cargo.c
@@ -1,3 +1,4 @@
+/* $Id$ */
 
 #include "stdafx.h"
 #include "openttd.h"