diff --git a/spa/models/MixPlay.py b/spa/models/MixPlay.py
index 346b54c..6bb7246 100644
--- a/spa/models/MixPlay.py
+++ b/spa/models/MixPlay.py
@@ -6,7 +6,10 @@ class MixPlay(_Activity):
     mix = models.ForeignKey('spa.Mix', related_name='plays')
 
     def __unicode__(self):
-        return "%s %s %s %s" % (self.user.get_full_name, self.get_verb_passed(), self.get_object_name(), self.date)
+        if self.user is None:
+            return "%s %s %s %s" % ("Anonymous", self.get_verb_passed(), self.get_object_name(), self.date)
+        else:
+            return "%s %s %s %s" % (self.user.get_full_name, self.get_verb_passed(), self.get_object_name(), self.date)
 
     def get_verb_passed(self):
         return "played"