diff --git a/tmdev.sh b/tmdev.sh
old mode 100755
new mode 100644
index b88bbc3..9308e0b
--- a/tmdev.sh
+++ b/tmdev.sh
@@ -37,4 +37,4 @@ tmux new-window -n "scratch" -t "${session}"
 tmux send-keys -t "${session}:3.1" "git status" C-m
 
 # finally attach to the new session
-tmux attach-session -t "${session}"
+tmux -u attach-session -t "${session}"