diff --git a/atlas/filters.py b/atlas/filters.py
index 1b0a1437..960aed6f 100755
--- a/atlas/filters.py
+++ b/atlas/filters.py
@@ -22,7 +22,7 @@ class CaseFilter(django_filters.FilterSet):
     )
     differential = django_filters.ModelMultipleChoiceFilter(
         field_name='differential__condition',
-        to_field_name='differential',
+        to_field_name='condition',
         queryset=Condition.objects.all(),
     )