1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/progmodes/which-func.el b/lisp/progmodes/which-func.el
index d57a3128a16..07cb43b64a2 100644
--- a/lisp/progmodes/which-func.el
+++ b/lisp/progmodes/which-func.el
@@ -209,7 +209,8 @@ It creates the Imenu index for the buffer, if necessary."
           (setq imenu--index-alist
                 (save-excursion (funcall imenu-create-index-function))))
     (error
-     (unless (equal err '(error "This buffer cannot use `imenu-default-create-index-function'"))
+     (unless (equal err
+                    '(user-error "This buffer cannot use `imenu-default-create-index-function'"))
        (message "which-func-ff-hook error: %S" err))
      (setq which-func-mode nil))))