diff --git a/swift/common/middleware/catch_errors.py b/swift/common/middleware/catch_errors.py
index 6ef32d0c99..e94133627e 100644
--- a/swift/common/middleware/catch_errors.py
+++ b/swift/common/middleware/catch_errors.py
@@ -42,7 +42,7 @@ class CatchErrorMiddleware(object):
 def filter_factory(global_conf, **local_conf):
     conf = global_conf.copy()
     conf.update(local_conf)
-    
+
     def except_filter(app):
         return CatchErrorMiddleware(app, conf)
     return except_filter