diff --git a/src/program/mixins.py b/src/program/mixins.py
index 20cc04e8..c66a9fa7 100644
--- a/src/program/mixins.py
+++ b/src/program/mixins.py
@@ -10,7 +10,7 @@ from django.http import Http404, HttpResponse
 class EnsureCFSOpenMixin(SingleObjectMixin):
     def dispatch(self, request, *args, **kwargs):
         # do not permit editing if call for speakers is not open
-        if not self.get_object().camp.call_for_speakers_open:
+        if not self.camp.call_for_speakers_open:
             messages.error(request, "The Call for Speakers is not open.")
             return redirect(reverse('proposal_list', kwargs={'camp_slug': self.camp.slug}))