1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 018278c31..bc11b0de2 100644
--- a/Makefile
+++ b/Makefile
@@ -670,6 +670,7 @@ C_SOURCES += queue.c
 C_SOURCES += rail.c
 C_SOURCES += rail_cmd.c
 C_SOURCES += rail_gui.c
+C_SOURCES += railtypes.c
 C_SOURCES += rev.c
 C_SOURCES += road_cmd.c
 C_SOURCES += road_gui.c