diff --git a/server/modules/rendering/html-security/renderer.js b/server/modules/rendering/html-security/renderer.js
index c1cb6d71..577d88ec 100644
--- a/server/modules/rendering/html-security/renderer.js
+++ b/server/modules/rendering/html-security/renderer.js
@@ -18,6 +18,7 @@ module.exports = {
           h5: ['class', 'id', 'style'],
           h6: ['class', 'id', 'style'],
           img: ['alt', 'class', 'draggable', 'height', 'src', 'style', 'width'],
+          kbd: ['class'],
           li: ['class', 'style'],
           mark: ['class', 'style'],
           ol: ['class', 'style'],