diff --git a/graphene_django/types.py b/graphene_django/types.py
index 40f903b..144f717 100644
--- a/graphene_django/types.py
+++ b/graphene_django/types.py
@@ -127,7 +127,7 @@ class DjangoObjectType(ObjectType):
         if not is_valid_neomodel_model(type(root)):
             raise Exception(('Received incompatible instance "{}".').format(root))
 
-        model = root._meta.model._meta.concrete_model
+        model = root._meta.model
         return model == cls._meta.model
 
     @classmethod