diff --git a/atlas/views.py b/atlas/views.py
index 63c5a121..4e2b4f57 100755
--- a/atlas/views.py
+++ b/atlas/views.py
@@ -1119,7 +1119,7 @@ def collection_mark_question(request, pk, case_number):
 
     case_detail = CaseDetail.objects.filter(case=case, collection=collection)
 
-    answers = CidReportAnswer.objects.filter(question=case_detail)
+    answers = CidReportAnswer.objects.filter(question__in=case_detail)
 
     return render(
         request,