diff --git a/py_asciimath/utils/log.py b/py_asciimath/utils/log.py
index 3839ea6..a370b7c 100644
--- a/py_asciimath/utils/log.py
+++ b/py_asciimath/utils/log.py
@@ -12,7 +12,6 @@
     unicode_literals,
 )
 
-from builtins import filter
 from collections import OrderedDict
 from functools import wraps
 from inspect import getcallargs