--- a/Makefile	Mon Jul 04 10:01:06 2005 +0000
+++ b/Makefile	Mon Jul 04 14:58:55 2005 +0000
@@ -651,6 +651,7 @@
 C_SOURCES += order_gui.c
 C_SOURCES += openttd.c
 C_SOURCES += pathfind.c
+C_SOURCES += pbs.c
 C_SOURCES += player_gui.c
 C_SOURCES += players.c
 C_SOURCES += pool.c