diff --git a/graphene/relay/fields.py b/graphene/relay/fields.py
index 9bd097ec..65ecb583 100644
--- a/graphene/relay/fields.py
+++ b/graphene/relay/fields.py
@@ -58,10 +58,10 @@ class ConnectionField(Field):
         return edge_type.for_node(node)
 
     def get_type(self, schema):
-        from graphene.relay.utils import is_node
+        from graphene.relay.utils import is_node, is_node_type
         type = schema.T(self.type)
         node = schema.objecttype(type)
-        assert is_node(node), 'Only nodes have connections.'
+        assert is_node(node) or is_node_type(node), 'Only nodes have connections.'
         schema.register(node)
         connection_type = self.get_connection_type(node)