diff --git a/rhodecode/lib/paster_commands/cache_keys.py b/rhodecode/lib/paster_commands/cache_keys.py
--- a/rhodecode/lib/paster_commands/cache_keys.py
+++ b/rhodecode/lib/paster_commands/cache_keys.py
@@ -29,15 +29,14 @@ import os
 import sys
 import logging
 
-from os.path import dirname as dn, join as jn
 from rhodecode.model.meta import Session
-#to get the rhodecode import
+from rhodecode.lib.utils import BasePasterCommand
+from rhodecode.model.db import CacheInvalidation
+
+# fix rhodecode import
+from os.path import dirname as dn
 rc_path = dn(dn(dn(os.path.realpath(__file__))))
 sys.path.append(rc_path)
-from rhodecode.lib.utils import BasePasterCommand
-
-from rhodecode.model.db import CacheInvalidation
-
 
 log = logging.getLogger(__name__)