diff --git a/draftsman/classes/entity_list.py b/draftsman/classes/entity_list.py
index 8246f57..4e00ddf 100644
--- a/draftsman/classes/entity_list.py
+++ b/draftsman/classes/entity_list.py
@@ -15,6 +15,7 @@
 from draftsman.utils import reissue_warnings
 from draftsman.signatures import Connections, DraftsmanBaseModel
 from draftsman.warning import HiddenEntityWarning
+from draftsman import utils
 
 from collections.abc import MutableSequence
 from copy import deepcopy