diff --git a/flashcards/views.py b/flashcards/views.py
index df4874c..e5da7af 100644
--- a/flashcards/views.py
+++ b/flashcards/views.py
@@ -37,7 +37,7 @@ class SectionViewSet(ReadOnlyModelViewSet):
         """
         flashcards = Flashcard.cards_visible_to(request.user)
         if 'hidden' in request.GET:
-            if request.get['hidden'] == 'only':
+            if request.GET['hidden'] == 'only':
                 flashcards = Flashcard.cards_hidden_by(request.user)
             else:
                 flashcards |= Flashcard.cards_hidden_by(request.user)