diff --git a/.tmux.conf b/.tmux.conf
index d04c21b..4be2acf 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -65,7 +65,7 @@ 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