diff --git a/longs/views.py b/longs/views.py
index c8f47210..b0618758 100755
--- a/longs/views.py
+++ b/longs/views.py
@@ -682,6 +682,8 @@ def mark_answer(request, pk, sk, tk):
     try:
         unmarked = question.GetUnmarkedAnswers()
         next_unmarked_id = unmarked[0].cid
+        if next_unmarked_id == tk:
+            next_unmarked_id = unmarked[1].cid
     except IndexError:
         next_unmarked_id = False