diff --git a/spa/api/v1/ActivityResource.py b/spa/api/v1/ActivityResource.py
index 1b08363..cc0ace4 100755
--- a/spa/api/v1/ActivityResource.py
+++ b/spa/api/v1/ActivityResource.py
@@ -21,7 +21,7 @@ class ActivityResource(BackboneCompatibleResource):
                 user_image = bundle.obj.user.get_small_profile_image()
                 user_profile = bundle.obj.user.get_profile_url()
             else:
-                user_name = "Anonymous"
+                user_name = UserProfile.get_default_moniker()
                 user_image = UserProfile.get_default_avatar_image()
                 user_profile = ""
 
diff --git a/spa/api/v1/NotificationResource.py b/spa/api/v1/NotificationResource.py
index b6acb81..c4517ae 100644
--- a/spa/api/v1/NotificationResource.py
+++ b/spa/api/v1/NotificationResource.py
@@ -2,6 +2,7 @@ from tastypie.authentication import SessionAuthentication
 from tastypie.authorization import DjangoAuthorization
 from spa.api.v1.BackboneCompatibleResource import BackboneCompatibleResource
 from spa.models.notification import Notification
+from spa.models.userprofile import UserProfile
 
 
 class NotificationResource(BackboneCompatibleResource):
@@ -17,9 +18,12 @@ class NotificationResource(BackboneCompatibleResource):
         return object_list.filter(to_user=bundle.request.user)
 
     def dehydrate(self, bundle):
-        bundle.data['user_image'] = bundle.obj.from_user.get_small_profile_image()
-        bundle.data['user_name'] = bundle.obj.from_user.get_nice_name()
-
+        if bundle.obj.from_user is not None:
+            bundle.data['user_image'] = bundle.obj.from_user.get_small_profile_image()
+            bundle.data['user_name'] = bundle.obj.from_user.get_nice_name()
+        else:
+            bundle.data['user_image'] = UserProfile.get_default_avatar_image()
+            bundle.data['user_name'] = UserProfile.get_default_moniker()
         return bundle
 
     def alter_list_data_to_serialize(self, request, data):
diff --git a/spa/models/userprofile.py b/spa/models/userprofile.py
index 1678915..b15205c 100755
--- a/spa/models/userprofile.py
+++ b/spa/models/userprofile.py
@@ -185,3 +185,6 @@ class UserProfile(_BaseModel):
     def get_default_avatar_image(cls):
         return urlparse.urljoin(settings.STATIC_URL, "img/default-avatar-32.png")
 
+    @classmethod
+    def get_default_moniker(cls):
+        return "Anonymous"
\ No newline at end of file