diff --git a/Makefile b/Makefile
index 99f0921..96ac4a3 100644
--- a/Makefile
+++ b/Makefile
@@ -110,7 +110,7 @@ finalize:
 	###   then:
 	###   # tmux a
 	###
-	tmux 'make _finalize'
+	tmux new-session 'make _finalize'