diff --git a/sh/tmux.sh b/sh/tmux.sh
index a99a738..7d18222 100644
--- a/sh/tmux.sh
+++ b/sh/tmux.sh
@@ -99,7 +99,7 @@ set-option -g status-format[0] '\
 #[align=right]\
 #[bg=##202020] #[bg=##303030] \
 #[fg=yellow]%H:%M:%S\
-#[bg=##303030] #[bg=##202020] \
+#[bg=##303030] #{?client_prefix,#[bg=green],#[bg=##202020]} \
 '
 
 # line 2