diff --git a/biothings/hub/datatransform/ciidstruct.py b/biothings/hub/datatransform/ciidstruct.py
index 323adceaf..17f9f2739 100644
--- a/biothings/hub/datatransform/ciidstruct.py
+++ b/biothings/hub/datatransform/ciidstruct.py
@@ -2,7 +2,7 @@
 CIIDStruct - case insenstive id matching data structure
 """
 # pylint: disable=E0611
-from biothings.hub.datatransform import IDStruct
+from .datatransform import IDStruct
 
 
 class CIIDStruct(IDStruct):