diff --git a/spa/models/Comment.py b/spa/models/Comment.py
index 4f113aa..0af0f7b 100644
--- a/spa/models/Comment.py
+++ b/spa/models/Comment.py
@@ -8,7 +8,7 @@ class Comment(_BaseModel):
         app_label = 'spa'
 
     user = models.ForeignKey(User, editable=False)
-    mix = models.ForeignKey(Mix, editable=False, related_name='comments')
+    mix = models.ForeignKey(Mix, editable=False, null=True, blank=True, related_name='comments')
     comment = models.CharField(max_length=1024)
     date_created = models.DateTimeField(auto_now=True)
     time_index = models.IntegerField()