1 files changed, 4 insertions, 2 deletions

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index c599fbcf9b2..7d686b10057 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1065,6 +1065,8 @@ But a prefix argument (optional second arg) means ask user,
 for each such `.el' file, whether to compile it.  Prefix argument 0 means
 don't ask and compile the file anyway."
   (interactive "DByte recompile directory: \nP")
+  (if arg
+      (setq arg (prefix-numeric-value arg)))
   (save-some-buffers)
   (set-buffer-modified-p (buffer-modified-p)) ;Update the mode line.
   (let ((directories (list (expand-file-name directory)))
@@ -1082,7 +1084,7 @@ don't ask and compile the file anyway."
            (if (and (not (member (car files) '("." ".." "RCS" "CVS")))
                     (file-directory-p source))
                (if (or (null arg)
-                       (eq arg 0)
+                       (eq 0 arg)
                        (y-or-n-p (concat "Check " source "? ")))
                    (setq directories
                          (nconc directories (list source))))
@@ -1092,7 +1094,7 @@ don't ask and compile the file anyway."
                       (if (file-exists-p dest)
                           (file-newer-than-file-p source dest)
                         (and arg
-                             (or (zerop arg)
+                             (or (eq 0 arg)
                                  (y-or-n-p (concat "Compile " source "? "))))))
                  (progn (byte-compile-file source)
                         (setq file-count (1+ file-count))