--- a/openttd.dsp	Mon Jun 26 15:00:23 2006 +0000
+++ b/openttd.dsp	Mon Jun 26 15:59:58 2006 +0000
@@ -922,6 +922,10 @@
 # End Source File
 # Begin Source File
 
+SOURCE=.\tunnel_map.c
+# End Source File
+# Begin Source File
+
 SOURCE=.\tunnelbridge_cmd.c
 # End Source File
 # Begin Source File