diff --git a/Makefile b/Makefile
index e9e3889..c8d2093 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,8 @@ SUBDIRS=tools/makeadf \
 	014.lace_mode\
 	015.sliced_ham\
 	016.copper_fun\
-	017.dual_playfield
+	017.dual_playfield\
+	018.vert_scroll
 
 .PHONY: subdirs $(SUBDIRS)