diff --git a/flashcards/views.py b/flashcards/views.py
index 8ed461c..ea935b5 100644
--- a/flashcards/views.py
+++ b/flashcards/views.py
@@ -118,7 +118,10 @@ class SectionViewSet(ReadOnlyModelViewSet):
         """
         Gets the contents of a user's deck for a given section.
         """
-        qs = request.user.get_deck(self.get_object())
+        try:
+            qs = request.user.get_deck(self.get_object())
+        except:
+            raise PermissionDenied("User not enrolled in that section")
         serializer = FlashcardSerializer(qs, context={'user': request.user}, many=True)
         log_event(request, str(self.get_object()))
         return Response(serializer.data)