1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index ccbdb763..f7c44b20 100644
--- a/tmux.h
+++ b/tmux.h
@@ -75,6 +75,7 @@ extern char   **environ;
 #define BELL_NONE 0
 #define BELL_ANY 1
 #define BELL_CURRENT 2
+#define BELL_OTHER 3
 
 /* Special key codes. */
 #define KEYC_NONE 0xfff