diff --git a/package-build.el b/package-build.el
index 80ad6635..8a01117b 100644
--- a/package-build.el
+++ b/package-build.el
@@ -149,10 +149,6 @@ function for access to this function")
   "In DIR (or `default-directory' if unset) run COMMAND with ARGS.
 Output is written to the current buffer."
   (let* ((default-directory (or dir default-directory))
-         (default-directory
-           (if (file-directory-p default-directory)
-               (concat (directory-file-name default-directory) "/")
-             default-directory))
          (have-timeout (executable-find "timeout"))
          (argv (if have-timeout
                    (append (list "timeout" "-k" "60" "600" command) args)
@@ -182,9 +178,8 @@ CONFIG, if any, or `package-build-default-files-spec' otherwise."
     (pb/message "Fetcher: %s" repo-type)
     (unless (eq 'wiki repo-type)
       (pb/message "Source: %s\n" (or (plist-get config :repo) (plist-get config :url))))
-    (let ((default-directory working-dir))
-      (funcall (intern (format "pb/checkout-%s" repo-type))
-               package-name config working-dir))))
+    (funcall (intern (format "pb/checkout-%s" repo-type))
+             package-name config working-dir)))
 
 (defvar pb/last-wiki-fetch-time 0
   "The time at which an emacswiki URL was last requested.