diff --git a/layouts/window-auto b/layouts/window-auto
index d5979fa..e51a433 100755
--- a/layouts/window-auto
+++ b/layouts/window-auto
@@ -18,7 +18,7 @@ if [[ $ratio -ge 100 ]]; then
     `dirname $0`/window-wide-right
   else
     # terminal is wide and small
-    tmux split-window -h -l 50% -c '#{pane_current_path}'
+    tmux split-window -h -c '#{pane_current_path}'
     tmux select-pane -t 1
   fi
 else