diff --git a/arraycontext/container/traversal.py b/arraycontext/container/traversal.py
index e7bf7312b504e497ca529a803719e598ac922030..da17eec1f1bb9d9661e95343cc4186914a454bbb 100644
--- a/arraycontext/container/traversal.py
+++ b/arraycontext/container/traversal.py
@@ -67,7 +67,6 @@ from arraycontext.context import ArrayContext
 from arraycontext.container import (
         ContainerT, ArrayOrContainerT, is_array_container,
         serialize_container, deserialize_container)
-from pytools import memoize_in
 
 
 # {{{ array container traversal helpers