diff --git a/api/optimeet/groups/views.py b/api/optimeet/groups/views.py
index 37764f0..6a040eb 100644
--- a/api/optimeet/groups/views.py
+++ b/api/optimeet/groups/views.py
@@ -75,6 +75,9 @@ def add_preference_to_group(request, group_id, user_id, format=None):
     except models.UserGroup.DoesNotExist:
         raise Http404 
 
+    except models.Group.DoesNotExist:
+        raise Http404
+    
     serializer = serializers.PreferencesSerializer(data=request.data, context={"group_id":group,"user_id":user_id}) 
     
     if serializer.is_valid():