diff --git a/confs/tmux.conf b/confs/tmux.conf
index d58f5ca..6225ce0 100644
--- a/confs/tmux.conf
+++ b/confs/tmux.conf
@@ -64,7 +64,7 @@ bind C-f command-prompt -p find-session 'switch-client -t %%'
 # split current window horizontally
 bind - split-window -v
 # split current window vertically
-bind _ split-window -h
+bind | split-window -h
 
 # pane navigation
 bind -r h select-pane -L  # move left