diff --git a/lib/markdownBuilder.js b/lib/markdownBuilder.js
index 98cad6ed..abeac93f 100644
--- a/lib/markdownBuilder.js
+++ b/lib/markdownBuilder.js
@@ -831,7 +831,7 @@ function build({
   function makeproperties(schema, slugger) {
     if (schema[keyword`properties`] || schema[keyword`patternProperties`] || schema[keyword`additionalProperties`]) {
       return [
-        heading(1, text(i18n`${schema.title} Properties`)),
+        heading(1, text(i18n`${simpletitle(schema)} Properties`)),
         makeproptable(
           schema[keyword`properties`],
           schema[keyword`patternProperties`],