diff --git a/modules/init-util.t.el b/modules/init-util.t.el
index b587f718..a8db790b 100644
--- a/modules/init-util.t.el
+++ b/modules/init-util.t.el
@@ -53,8 +53,10 @@ Return the BODY return value"
      (with-temp-buffer
        ;; Use `python-mode' for it richness of supported string formats.
        (when (numberp point-or-region)
-         (let (python-mode-hook
-               python-indent-guess-indent-offset-verbose)
+         (let ((python-mode-hook nil)
+               (python-indent-guess-indent-offset-verbose nil))
+           (ignore python-mode-hook
+                   python-indent-guess-indent-offset-verbose)
            (python-mode)))
        (insert input)
        (cond