1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index 5b2aac5b..63eddd19 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1005,6 +1005,7 @@ struct window {
 #define WINDOW_REDRAW 0x4
 #define WINDOW_SILENCE 0x8
 #define WINDOW_ZOOMED 0x10
+#define WINDOW_ALERTFLAGS (WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_SILENCE)
 
 	struct options	 options;