diff --git a/django/contrib/formtools/wizard.py b/django/contrib/formtools/wizard.py
index a197c3e659..398de742ec 100644
--- a/django/contrib/formtools/wizard.py
+++ b/django/contrib/formtools/wizard.py
@@ -149,7 +149,7 @@ class FormWizard(object):
         data = [(bf.name, bf.data or '') for bf in form] + [settings.SECRET_KEY]
         # Use HIGHEST_PROTOCOL because it's the most efficient. It requires
         # Python 2.3, but Django requires 2.3 anyway, so that's OK.
-        pickled = pickle.dumps(data, protocol=pickle.HIGHEST_PROTOCOL)
+        pickled = pickle.dumps(data, pickle.HIGHEST_PROTOCOL)
         return md5.new(pickled).hexdigest()
 
     def determine_step(self, request, *args, **kwargs):