diff --git a/longs/views.py b/longs/views.py
index 8a333db5..7f149935 100755
--- a/longs/views.py
+++ b/longs/views.py
@@ -650,7 +650,7 @@ def mark_answer(request, pk, sk, tk):
         raise Http404("Exam question does not exist")
 
     try:
-        answer = question.cid_user_answers.get(cid=tk)
+        answer = question.cid_user_answers.get(cid=tk, exam__id=pk)
     except ObjectDoesNotExist:
         raise Http404("User answer does not exist")
 
@@ -722,7 +722,7 @@ def mark(request, pk, sk):
         raise Http404("Exam question does not exist")
 
 
-    user_answers = question.cid_user_answers.all()
+    user_answers = question.cid_user_answers.filter(exam__id=pk)
 
     return render(
         request,
@@ -764,7 +764,7 @@ def exam_scores_cid(request, pk):
         user_names[cid] = cid
         for q in questions:
             # Get user answer
-            s = q.cid_user_answers.filter(cid=cid).first()
+            s = q.cid_user_answers.filter(cid=cid, exam__id=pk).first()
 
             if not s:
                 # skip if no answer, (score 4)
@@ -857,7 +857,7 @@ def exam_scores_cid_user(request, pk, sk):
 
     for q in questions:
         # Get user answer
-        user_answer = q.cid_user_answers.filter(cid=cid).first()
+        user_answer = q.cid_user_answers.filter(cid=cid, exam__id=pk).first()