diff --git a/stream_django/activity.py b/stream_django/activity.py
index dfea705..9499ed8 100644
--- a/stream_django/activity.py
+++ b/stream_django/activity.py
@@ -53,7 +53,7 @@ def activity_related_models(cls):
     def extra_activity_data(self):
         '''
         Use this hook to store extra data in activities.
-        If you need to store references to model instances you should use create_model_refeactivity_rence
+        If you need to store references to model instances you should use create_model_reference
 
         eg:
             @property