diff --git a/assets/default/dotfiles/tmux.conf b/assets/default/dotfiles/tmux.conf
index 190af56..a5b6e0f 100644
--- a/assets/default/dotfiles/tmux.conf
+++ b/assets/default/dotfiles/tmux.conf
@@ -6,7 +6,7 @@ set-option -g set-titles on
 set-option -g set-titles-string '[#S:#I] #W'
 
 # copy and paster
-if-shell 'test "$(uname -s)" = "Darwin"' 'set-option -g default-command "reattach-to-user-namespace-tmux bash"'
+if-shell 'test "$(uname -s)" = "Darwin"' 'set-option -g default-command "reattach-to-user-namespace-tmux $SHELL"'
 
 # look good
 set -g default-terminal "screen-256color"