diff --git a/src/wscript b/src/wscript
index 481140e..ce073cb 100644
--- a/src/wscript
+++ b/src/wscript
@@ -16,6 +16,7 @@ radarmain_source = '''
 	radar_main.c
 	control.c
 	control_parser.c
+	lookahead.c
 	radar.c
 	potential.c
 	simulate.c