diff --git a/Makefile b/Makefile
index ae7405d..d215ae1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SRC ?= main
+SRC ?= grofftut
 ODIR ?= /tmp/
 export ODIR SRC
 
diff --git a/main.ms b/grofftut.ms
similarity index 100%
rename from main.ms
rename to grofftut.ms