diff --git a/docs/docusaurus.config.js b/docs/docusaurus.config.js
index 946482012..5868da35a 100644
--- a/docs/docusaurus.config.js
+++ b/docs/docusaurus.config.js
@@ -1,5 +1,5 @@
 module.exports = {
-  onBrokenLinks: 'warn',
+  onBrokenLinks: 'error',
   title: 'OpenRefine',
   tagline: 'A power tool for working with messy data.',
   url: 'https://docs.openrefine.org/',