diff --git a/knowledge/survey/browser.py b/knowledge/survey/browser.py
index 502429b..864f62f 100644
--- a/knowledge/survey/browser.py
+++ b/knowledge/survey/browser.py
@@ -254,7 +254,7 @@ class SurveyView(ConceptView):
         for opt in self.answerOptions:
             value = str(opt['value'])
             result.append(dict(value=value, checked=(setting == value), 
-                                title=opt['description']))
+                               title=opt.get('description') or u''))
         return result
 
     def getTextValue(self, question):