diff --git a/rapids/models.py b/rapids/models.py
index b786b6b6..242e024e 100644
--- a/rapids/models.py
+++ b/rapids/models.py
@@ -835,6 +835,8 @@ class CidUserAnswer(models.Model):
         return reverse("rapids:user_answer_view", kwargs={"pk": self.pk})
 
     def get_answer_callstate(self):
+        if not self.callstate:
+            return ""
         return self.callstate.label
 
     def get_answer_score(self, cached=True):