diff -ur a/django-lint/DjangoLint/AstCheckers/settings.py b/django-lint/DjangoLint/AstCheckers/settings.py
--- a/django-lint/DjangoLint/AstCheckers/settings.py    2010-01-21 15:29:22.000000000 +0100
+++ b/django-lint/DjangoLint/AstCheckers/settings.py    2011-11-25 14:10:37.542460795 +0100
@@ -74,6 +74,10 @@
             xs = safe_infer(ass).get_children()
         except AttributeError:
             return
+        try:
+            xs_iterable = iter(xs)
+        except TypeError:
+            return
 
         return [(x, x.value) for x in xs if isinstance(safe_infer(x), astng.Const)]