diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 3e75c2d718f..8196cae2056 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,8 @@
 2012-06-24  Leo Liu  <sdl.web@gmail.com>
 
+	* ibuf-ext.el (ibuffer-diff-buffer-with-file-1): Avoid buffer
+	read-only error.
+
 	* net/rcirc.el (rcirc): Avoid error when process-contact returns t.
 
 	* vc/diff-mode.el (diff-file-prev/next): Fix typo.
diff --git a/lisp/ibuf-ext.el b/lisp/ibuf-ext.el
index 22ec2f5df1f..4c9dfc213ce 100644
--- a/lisp/ibuf-ext.el
+++ b/lisp/ibuf-ext.el
@@ -1345,8 +1345,8 @@ a prefix argument reverses the meaning of that variable."
 		(diff-sentinel
 		 (call-process shell-file-name nil
 			       (current-buffer) nil
-			       shell-command-switch command)))
-	      (insert "\n"))))
+			       shell-command-switch command))
+		(insert "\n")))))
       (sit-for 0)
       (when (file-exists-p tempfile)
 	(delete-file tempfile)))))