1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/progmodes/bug-reference.el b/lisp/progmodes/bug-reference.el
index 4d78047268f..8ec379afab2 100644
--- a/lisp/progmodes/bug-reference.el
+++ b/lisp/progmodes/bug-reference.el
@@ -109,7 +109,7 @@ so that it is considered safe, see `enable-local-variables'.")
                              (funcall bug-reference-url-format))))))))))
 
 ;; Taken from button.el.
-(defun bug-reference-push-button (&optional pos use-mouse-action)
+(defun bug-reference-push-button (&optional pos _use-mouse-action)
   "Open URL corresponding to the bug reference at POS."
   (interactive
    (list (if (integerp last-command-event) (point) last-command-event)))