diff --git a/AUTHORS b/AUTHORS
index 2f7d745c5c..f37170f750 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -79,3 +79,4 @@ Doug Weimer (dweimer@gmail.com)
 Cory Wright (cory.wright@rackspace.com)
 Ye Jia Xu (xyj.asmy@gmail.com)
 Pete Zaitcev (zaitcev@kotori.zaitcev.us)
+Alex Yang (alex890714@gmail.com)
diff --git a/swift/obj/server.py b/swift/obj/server.py
index d9d96958cc..ea4fe07d40 100644
--- a/swift/obj/server.py
+++ b/swift/obj/server.py
@@ -230,7 +230,6 @@ class DiskFile(object):
                 if verify_file:
                     self._handle_close_quarantine()
             except (Exception, Timeout), e:
-                import traceback
                 self.logger.error(_('ERROR DiskFile %(data_file)s in '
                      '%(data_dir)s close failure: %(exc)s : %(stack)'),
                      {'exc': e, 'stack': ''.join(traceback.format_stack()),