diff --git a/atlas/filters.py b/atlas/filters.py
index 030f6795..7abea2e9 100755
--- a/atlas/filters.py
+++ b/atlas/filters.py
@@ -20,7 +20,7 @@ class CaseFilter(django_filters.FilterSet):
     author = django_filters.ModelMultipleChoiceFilter(
         queryset=get_authors, null_label="No author"
     )
-    foo = django_filters.filters.ModelMultipleChoiceFilter(
+    foo = django_filters.ModelMultipleChoiceFilter(
         field_name='differential__condition',
         to_field_name='differential',
         queryset=Condition.objects.all(),