1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index 7ba1b0b2..2601e9a5 100644
--- a/tmux.h
+++ b/tmux.h
@@ -896,6 +896,7 @@ struct window {
 	char		*name;
 	struct event	 name_timer;
 	struct timeval	 silence_timer;
+	struct timeval	 activity_time;
 
 	struct window_pane *active;
 	struct window_pane *last;