diff --git a/.config/tmux/tmux.conf b/.config/tmux/tmux.conf
index eb937e5..f65ccb1 100644
--- a/.config/tmux/tmux.conf
+++ b/.config/tmux/tmux.conf
@@ -198,8 +198,10 @@ set -g status-left "#{prefix_highlight}"
 
 set -g status-justify centre
 
-set -g window-status-current-format "#[fg=#{@accent_color} bold]#I #W"
-set -g window-status-format "#[fg=#{@ui_color}]#I #W"
+set -g window-status-current-format \
+	"#[fg=#{@accent_color} bold]#{?window_zoomed_flag,#[underscore],}#I #W"
+set -g window-status-format \
+	"#[fg=#{@ui_color}]#{?window_zoomed_flag,#[underscore],}#I #W"
 
 # Initialize TMUX plugin manager. Keep this line at the very bottom.
 run -b "$XDG_CONFIG_HOME/tmux/plugins/tpm/tpm"