diff --git a/moto/dynamodb2/models.py b/moto/dynamodb2/models.py
index b538deb88..99c965612 100644
--- a/moto/dynamodb2/models.py
+++ b/moto/dynamodb2/models.py
@@ -220,7 +220,7 @@ class Table(object):
             else:
                 current_attr = current
 
-            for key, val in expected.iteritems():
+            for key, val in expected.items():
                 if 'Exists' in val and val['Exists'] == False:
                     if key in current_attr:
                         raise ValueError("The conditional request failed")