diff --git a/.gitignore b/.gitignore
index 16b287e..6b37d75 100755
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .gitignore~
 .coverage
+.keystore
 tags
 .tags
 .tags_sorted_by_file
diff --git a/spa/api/v1/MixResource.py b/spa/api/v1/MixResource.py
index feed707..9d62903 100755
--- a/spa/api/v1/MixResource.py
+++ b/spa/api/v1/MixResource.py
@@ -22,7 +22,7 @@ from spa.models.mix import Mix
 class MixResource(BackboneCompatibleResource):
     comments = fields.ToManyField('spa.api.v1.CommentResource.CommentResource', 'comments', null=True)
     favourites = fields.ToManyField('spa.api.v1.UserResource.UserResource', 'favourites',
-                                    related_name='favourites', full=True)
+                                    related_name='favourites', full=True, null=True)
 
     class Meta:
         queryset = Mix.objects.filter(is_active=True)