diff --git a/tmux.conf b/tmux.conf
index 8db6ee6..bb04aeb 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -66,7 +66,7 @@ bind a run-shell ~/.local/share/tmux/layouts/window-auto
 if -b '[ "`uname`" = "Darwin" ]' \
   'set -g default-command "reattach-to-user-namespace -l $SHELL"'
 
-if -b '[ "$TMUX_VERSION" > "3.2" ]' {
+if -b '[[ "$TMUX_VERSION" > "3.2" ]]' {
   # Open a popup with running the default shell
   bind T display-popup -S fg=#54546D -b rounded -d '#{pane_current_path}' -E $SHELL
   # Open a popup with session creator/switcher