diff --git a/Makefile b/Makefile
index 1308abe..fa4fe9c 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ $(TARGET): $(I6S)
 	$(INFORM6) -E2w~S~Dv8 $<
 
 %.i6: %.inf
-	$(INFORM7) -format=Inform6/16d $<
+	$(INFORM7) -release -format=Inform6/16d $<
 
 clean:
 	rm $(SRCDIR)/*.i6