diff --git a/browser/lobo/standard.py b/browser/lobo/standard.py
index 0e053ef..4c26f90 100644
--- a/browser/lobo/standard.py
+++ b/browser/lobo/standard.py
@@ -85,6 +85,8 @@ class ConceptView(BaseConceptView):
 
     @Lazy
     def renderedTextDescription(self):
+        if self.textDescription is None:
+            return u''
         return self.renderDescription(self.textDescription)
 
     @Lazy