1 files changed, 2 insertions, 0 deletions

diff --git a/ai_old.c b/ai_old.c
index d93ee6c28..40396159f 100644
--- a/ai_old.c
+++ b/ai_old.c
@@ -1,3 +1,5 @@
+/* $Id$ */
+
 #include "stdafx.h"
 #include "openttd.h"
 #include "functions.h"