diff --git a/gym/views.py b/gym/views.py
index 3a7d487..249eada 100644
--- a/gym/views.py
+++ b/gym/views.py
@@ -13,7 +13,7 @@ class RoomListView(generic.ListView):
     template_name = 'gym/rooms.html'
 
     def dispatch(self, request, *args, **kwargs):
-        if 'session' in request.session:
+        if 'session_pk' in request.session:
             del request.session['session_pk']
 
         return super().dispatch(request, *args, **kwargs)
@@ -25,7 +25,7 @@ class RoomDetailView(generic.DetailView):
     template_name = 'gym/room.html'
 
     def dispatch(self, request, *args, **kwargs):
-        if 'session' in request.session:
+        if 'session_pk' in request.session:
             del request.session['session_pk']
 
         return super().dispatch(request, *args, **kwargs)