diff --git a/admin/notes/unicode b/admin/notes/unicode
index 4a25d8159cb..bc1ae61840a 100644
--- a/admin/notes/unicode
+++ b/admin/notes/unicode
@@ -100,13 +100,19 @@ Specifically, the values of 'ucs-normalize-composition-exclusions' and
 verified against the latest Unicode data files.
 
 Next, test normalization functions against NormalizationTests.txt,
-in the test/ directory run:
+in the top-level directory run:
 
-  make lisp/international/ucs-normalize-tests
+  make -C test lisp/international/ucs-normalize-tests
 
 See commentary in test/lisp/international/ucs-normalize-tests.el
 regarding failing lines.
 
+Changes in UTS#46 and other relevant Unicode data might break our
+features that detect confusable and suspicious text, so run
+test/lisp-international/textsec-tests to check that:
+
+  make -C test lisp/international/textsec-tests
+
 The file BidiCharacterTest.txt should be copied to the test suite, and
 if its format has changed, the file biditest.el there should be
 modified to follow suit.  If there's trailing whitespace in