1 files changed, 1 insertions, 0 deletions

diff --git a/tmux.h b/tmux.h
index 7e541458..a9edf8ff 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1168,6 +1168,7 @@ struct mouse_event {
 
 	u_int	button;
 	u_int	clicks;
+	u_int	scroll;
 
 	int	wheel;
 	int     event;