diff --git a/lisp/emacs-lisp/byte-run.el b/lisp/emacs-lisp/byte-run.el
index ac3bb86a597..2ce2efd2aa7 100644
--- a/lisp/emacs-lisp/byte-run.el
+++ b/lisp/emacs-lisp/byte-run.el
@@ -134,7 +134,7 @@ The return value of this function is not used."
              :autoload-end
              (eval-and-compile
                (defun ,cfname (,@(car data) ,@args)
-                 (ignore ,@(remq '&rest (remq '&optional args)))
+                 (ignore ,@(delq '&rest (delq '&optional (copy-sequence args))))
                  ,@(cdr data))))))))
 
 (defalias 'byte-run--set-doc-string