diff --git a/regress/screen-redraw-tiled.sh b/regress/screen-redraw-tiled.sh
index e428d7dba..94353f5f8 100644
--- a/regress/screen-redraw-tiled.sh
+++ b/regress/screen-redraw-tiled.sh
@@ -51,6 +51,8 @@ compare() {
 
 # Fresh inner window of fixed size, with one command running.
 new_scene() {
+	$TMUX2 selectw -t:0 || exit 1
+	$TMUX2 kill-window -a 2>/dev/null
 	$TMUX2 neww -d "sh -c 'exec sleep 100'" || exit 1
 	$TMUX2 selectw -t:\$ || exit 1
 	$TMUX2 resizew -x40 -y14 || exit 1