diff --git a/.tmux.conf b/.tmux.conf
index 2608a36..44de80f 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -1013,7 +1013,14 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #   # see https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard
 #   if command -v reattach-to-user-namespace > /dev/null 2>&1; then
 #     default_shell="$(tmux show -gv default-shell)"
-#     tmux set -g default-command "exec $default_shell... 2> /dev/null & reattach-to-user-namespace $default_shell -l"
+#     case "$default_shell" in
+#       *fish)
+#         tmux set -g default-command "reattach-to-user-namespace -l $default_shell"
+#         ;;
+#       *sh)
+#         tmux set -g default-command "exec $default_shell... 2> /dev/null & reattach-to-user-namespace -l $default_shell"
+#         ;;
+#     esac
 #   fi
 #
 #   _apply_overrides