diff --git a/apps/rp/models/vote.py b/apps/rp/models/vote.py
index 5e2e83ea21c9732928e5931ceff0bdc8f872d9e1..6957bd724314b3a3c94160e29bb90779baafab87 100644
--- a/apps/rp/models/vote.py
+++ b/apps/rp/models/vote.py
@@ -27,7 +27,7 @@ class UnDVotes(models.Model):
         verbose_name_plural = _("Votes")
 
     def __str__(self):
-        return "{}:{}:{}".format(self.user, self.content_object, self.score)
+        return "{}:{}:{}".format(self.username, self.content_object, self.score)
 
 
 class UnDVotedMixin(models.Model):