--- a/Makefile	Wed Jan 12 00:50:08 2005 +0000
+++ b/Makefile	Wed Jan 12 11:21:28 2005 +0000
@@ -613,6 +613,7 @@
 C_SOURCES += settings_gui.c
 C_SOURCES += ship_cmd.c
 C_SOURCES += ship_gui.c
+C_SOURCES += signs.c
 C_SOURCES += smallmap_gui.c
 C_SOURCES += sound.c
 C_SOURCES += sprite.c