diff --git a/layouts/window-wide-left b/layouts/window-wide-left
index ebf5d70..d5e6f16 100755
--- a/layouts/window-wide-left
+++ b/layouts/window-wide-left
@@ -1,6 +1,11 @@
-#!/usr/bin/env -S tmux source-file
+#!/usr/bin/env sh
 
-split-window -h -l 43% -c '#{pane_current_path}'
-select-pane -t 1
+cols=`tmux display -p "#{pane_width}"`
 
-# vim: ft=tmux
+if [[ $cols -gt 300 ]]; then
+  tmux split-window -h -l 37% -c '#{pane_current_path}'
+  tmux select-pane -t 1
+else
+  tmux split-window -h -l 43% -c '#{pane_current_path}'
+  tmux select-pane -t 1
+fi
diff --git a/layouts/window-wide-right b/layouts/window-wide-right
index 28e378b..6e50790 100755
--- a/layouts/window-wide-right
+++ b/layouts/window-wide-right
@@ -1,6 +1,11 @@
-#!/usr/bin/env -S tmux source-file
+#!/usr/bin/env sh
 
-split-window -h -l 57% -c '#{pane_current_path}'
-select-pane -t 1
+cols=`tmux display -p "#{pane_width}"`
 
-# vim: ft=tmux
+if [[ $cols -gt 300 ]]; then
+  tmux split-window -h -l 63% -c '#{pane_current_path}'
+  tmux select-pane -t 1
+else
+  tmux split-window -h -l 57% -c '#{pane_current_path}'
+  tmux select-pane -t 1
+fi