diff --git a/src/build.js b/src/build.js
index 1880a808a5..ccf09fd541 100644
--- a/src/build.js
+++ b/src/build.js
@@ -114,6 +114,9 @@ async function build({ config, feeds, cache, writeCache = false }) {
             const redirect = config.redirects[host];
             if (redirect) item.link = `https://${redirect}${url.pathname}${url.search}`;
           }
+
+          // 5. escape html in titles
+          item.title = escapeHtml(item.title);
         });
 
         // add to allItems
@@ -193,4 +196,13 @@ function readCfg(path) {
   }
 
   return json;
-}
\ No newline at end of file
+}
+
+
+function escapeHtml(html) {
+  return html.replaceAll('&', '&')
+    .replaceAll('<', '&lt;')
+    .replaceAll('>', '&gt;')
+    .replaceAll('\'', '&apos;')
+    .replaceAll('"', '&quot;');
+}