diff --git a/graphene/relay/types.py b/graphene/relay/types.py
index 55da8910..abb10628 100644
--- a/graphene/relay/types.py
+++ b/graphene/relay/types.py
@@ -49,8 +49,8 @@ class Edge(ObjectType):
     @classmethod
     @memoize
     def for_node(cls, node):
-        from graphene.relay.utils import is_node
-        assert is_node(node), 'ObjectTypes in a edge have to be Nodes'
+        from graphene.relay.utils import is_node, is_node_type
+        assert is_node(node) or is_node_type(node), 'ObjectTypes in a edge have to be Nodes'
         node_field = Field(node, description='The item at the end of the edge')
         return type(
             '%s%s' % (node._meta.type_name, cls._meta.type_name),