diff --git a/flashcards/views.py b/flashcards/views.py
index 708990e..17e04ec 100644
--- a/flashcards/views.py
+++ b/flashcards/views.py
@@ -279,11 +279,11 @@ def reset_password(request, format=None):
     return Response(status=HTTP_204_NO_CONTENT)
 
 
-
 class FlashcardViewSet(GenericViewSet, CreateModelMixin, RetrieveModelMixin):
     queryset = Flashcard.objects.all()
     serializer_class = FlashcardSerializer
     permission_classes = [IsAuthenticatedAndConfirmed, IsEnrolledInAssociatedSection]
+
     # Override create in CreateModelMixin
     def create(self, request, *args, **kwargs):
         serializer = FlashcardSerializer(data=request.data)
@@ -418,8 +418,13 @@ class UserFlashcardQuizViewSet(GenericViewSet, CreateModelMixin, UpdateModelMixi
 
         user_flashcard = quiz_filter.first()
         mask = user_flashcard.get_mask().get_random_blank()
+        if not mask:
+            blanked_word = ""
+            log_event(request, mask)
+        else:
+            blanked_word = user_flashcard.flashcard.text[slice(*mask)]
         user_flashcard_quiz = UserFlashcardQuiz(user_flashcard=user_flashcard,
-                                                blanked_word=user_flashcard.flashcard.text[slice(*mask)])
+                                                blanked_word=blanked_word)
         user_flashcard_quiz.save()
         response = QuizResponseSerializer(instance=user_flashcard_quiz, mask=mask)
         log_event(request, response)