diff --git a/tools/check_logs.py b/tools/check_logs.py
index f82b387..fc21f75 100755
--- a/tools/check_logs.py
+++ b/tools/check_logs.py
@@ -25,7 +25,6 @@
 import six.moves.urllib.request as urlreq
 import yaml
 
-
 # DEVSTACK_GATE_GRENADE is either unset if grenade is not running
 # or a string describing what type of grenade run to perform.
 is_grenade = os.environ.get('DEVSTACK_GATE_GRENADE') is not None
@@ -137,7 +136,7 @@
     with open(WHITELIST_FILE) as stream:
         loaded = yaml.safe_load(stream)
         if loaded:
-            for (name, l) in loaded.iteritems():
+            for (name, l) in six.iteritems(loaded):
                 for w in l:
                     assert 'module' in w, 'no module in %s' % name
                     assert 'message' in w, 'no message in %s' % name