diff --git a/sh/tmux.sh b/sh/tmux.sh
index c8dd065..84435fd 100644
--- a/sh/tmux.sh
+++ b/sh/tmux.sh
@@ -131,6 +131,10 @@ set-option -g status-format[3] '\
 #[fg=blue]#{window_width}×#{window_height}\
 '
 
+# line 5
+set-option -g status-format[4] '\
+'
+
 # refresh period
 set-option -g status-interval 1
 
@@ -158,6 +162,7 @@ bind-key -n C-F1 set-option -g status on
 bind-key -n C-F2 set-option -g status 2
 bind-key -n C-F3 set-option -g status 3
 bind-key -n C-F4 set-option -g status 4
+bind-key -n C-F5 set-option -g status 5
 
 # switch session
 bind-key -n M-Down switch-client -n