diff --git a/tmux.conf b/tmux.conf
index a6d8d308..4aef5e1d 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -11,7 +11,6 @@ bind-key R source-file ~/.tmux.conf \; display-message "tmux.conf reloaded."
 setw -g mode-keys vi
 
 # mouse behavior
-set -g mouse-utf8 on
 set -g mouse on
 
 set-option -g default-terminal screen-256color