1 files changed, 2 insertions, 0 deletions

diff --git a/airport.c b/airport.c
index a8d72e52a..f375e67cb 100644
--- a/airport.c
+++ b/airport.c
@@ -1,3 +1,5 @@
+/* $Id$ */
+
 #include "stdafx.h"
 #include "openttd.h"
 #include "debug.h"