diff --git a/sh/tmux.sh b/sh/tmux.sh
index 82023dd..cb7321b 100644
--- a/sh/tmux.sh
+++ b/sh/tmux.sh
@@ -25,8 +25,8 @@ set -g status-left ''
 set -g status-position top
 set -g status-right '| #{session_name} | %Y/%m/%d %H:%M:%S'
 
-#set -g window-status-activity-style bg=black,fg=red
-#set -g window-status-separator ' | '
+# windows separator
+set -g window-status-separator ' | '
 
 # style for messages
 set-option -g message-style bg=red,fg=white
@@ -38,8 +38,12 @@ set-option -g pane-border-style bg=black,fg=gray
 set-option -g prefix C-b
 set-option -g prefix2 F12
 
-#setw -g monitor-activity on
-#setw -g monitor-silence 0
+# enable activity monitoring
+setw -g monitor-activity on
+# activity style
+set -g window-status-activity-style bg=black,fg=red
+# disable silence monitoring
+setw -g monitor-silence 0
 
 #set-window-option -g window-status-current-style bg=black,fg=green
 #set-window-option -g window-status-style bg=black,fg=gray