1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/diff.el b/lisp/diff.el
index 231130db212..c985b66036e 100644
--- a/lisp/diff.el
+++ b/lisp/diff.el
@@ -36,7 +36,7 @@
 
 ;;;###autoload
 (defcustom diff-switches "-c"
-  "*A string or list of strings specifying switches to be be passed to diff."
+  "*A string or list of strings specifying switches to be passed to diff."
   :type '(choice string (repeat string))
   :group 'diff)
 
@@ -111,6 +111,7 @@ With prefix arg, prompt for diff switches."
                        ,(shell-quote-argument (or new-alt new)))
                      " "))
          (buf (get-buffer-create "*Diff*"))
+         (thisdir default-directory)
          proc)
     (save-excursion
       (display-buffer buf)
@@ -125,6 +126,7 @@ With prefix arg, prompt for diff switches."
               (diff ',old ',new ',switches ',no-async)))
       (set (make-local-variable 'diff-old-temp-file) old-alt)
       (set (make-local-variable 'diff-new-temp-file) new-alt)
+      (setq default-directory thisdir)
       (insert command "\n")
       (if (and (not no-async) (fboundp 'start-process))
           (progn