diff --git a/test/fixtures/0-dns/README.md b/test/fixtures/0-dns/README.md
index 650970a2c5a5cf..9a4a4a2b3d8a93 100644
--- a/test/fixtures/0-dns/README.md
+++ b/test/fixtures/0-dns/README.md
@@ -1,3 +1,5 @@
+# 0-dns
+
 ## Purpose
 The test cert file for use `test/parallel/test-tls-0-dns-altname.js`
 can be created by using `asn1.js` and `asn1.js-rfc5280`,