diff --git a/README.md b/README.md
index af0dea4..f383ade 100644
--- a/README.md
+++ b/README.md
@@ -191,9 +191,8 @@ Input: folder containing fonts, or single font file.
 
 ### `unicodeChartProof.py`
 
-Creates character charts similar to the Unicode.org charts for The Unicode
-Standard, but using the supplied font (and only the characters present in the
-font).
+Creates character charts similar to those appearing in The Unicode® Standard,
+but using the supplied font (and only the characters present in the font).
 
 Input: font file or folder containing font files
 
@@ -256,4 +255,5 @@ Input: folder containing font files.
 
 - "en_10k.txt" is based on [en_50k.txt](https://github.com/hermitdave/FrequencyWords/blob/525f9b560de45753a5ea01069454e72e9aa541c6/content/2016/en/en_50k.txt) from the [FrequencyWords](https://github.com/hermitdave/FrequencyWords) project, Copyright (c) 2016 Hermit Dave
 - fonts included in this distribution are subject to the SIL Open Font License, Copyright 2016-2023 Adobe.
+- Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the United States and other countries.
 
diff --git a/makeReadme.py b/makeReadme.py
index 56b3556..6590372 100644
--- a/makeReadme.py
+++ b/makeReadme.py
@@ -72,6 +72,7 @@ def make_doc_snippet(file_name):
 
 - "en_10k.txt" is based on [en_50k.txt](https://github.com/hermitdave/FrequencyWords/blob/525f9b560de45753a5ea01069454e72e9aa541c6/content/2016/en/en_50k.txt) from the [FrequencyWords](https://github.com/hermitdave/FrequencyWords) project, Copyright (c) 2016 Hermit Dave
 - fonts included in this distribution are subject to the SIL Open Font License, Copyright 2016-2023 Adobe.
+- Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the United States and other countries.
 
 '''
 
diff --git a/unicodeChartProof.py b/unicodeChartProof.py
index 6df902c..a2949e8 100644
--- a/unicodeChartProof.py
+++ b/unicodeChartProof.py
@@ -6,9 +6,8 @@
 # it.
 
 '''
-Creates character charts similar to the Unicode.org charts for The Unicode
-Standard, but using the supplied font (and only the characters present in the
-font).
+Creates character charts similar to those appearing in The Unicode® Standard,
+but using the supplied font (and only the characters present in the font).
 
 Input: font file or folder containing font files