diff --git a/abducer/abducer_base.py b/abducer/abducer_base.py
index 54380ec..284ebe4 100644
--- a/abducer/abducer_base.py
+++ b/abducer/abducer_base.py
@@ -11,6 +11,7 @@
 #================================================================#
 
 import abc
+# from kb import add_KB, hwf_KB
 from abducer.kb import add_KB, hwf_KB
 import numpy as np