diff --git a/lucene/NOTICE.txt b/lucene/NOTICE.txt
index 973cb101d5c..35901b70c28 100644
--- a/lucene/NOTICE.txt
+++ b/lucene/NOTICE.txt
@@ -30,9 +30,6 @@ with the same name. The implementation part is mainly done using pre-existing
 Lucene sorting code. In-place stable mergesort was borrowed from CGLIB,
 which is Apache-licensed.
 
-The class org.apache.lucene.util.WeakIdentityHashMap was derived from
-the Apache CXF project and is Apache License 2.0.
-
 The Google Code Prettify is Apache License 2.0.
 See http://code.google.com/p/google-code-prettify/
 
diff --git a/solr/NOTICE.txt b/solr/NOTICE.txt
index 1c2bcc81b97..3896176237a 100644
--- a/solr/NOTICE.txt
+++ b/solr/NOTICE.txt
@@ -69,9 +69,6 @@ with the same name. The implementation part is mainly done using pre-existing
 Lucene sorting code. In-place stable mergesort was borrowed from CGLIB,
 which is Apache-licensed.
 
-The class org.apache.lucene.util.WeakIdentityHashMap was derived from
-the Apache CXF project and is Apache License 2.0.
-
 The Google Code Prettify is Apache License 2.0.
 See http://code.google.com/p/google-code-prettify/