diff --git a/src/ui.js b/src/ui.js
index 708a5c450..93aa0de15 100644
--- a/src/ui.js
+++ b/src/ui.js
@@ -374,7 +374,7 @@ function renderMarkdown(content, givenOpts = {}) {
     mdComponents.deps.domPurify ??= require("dompurify");
 
     let domPurifyOpts = {
-      ALLOW_UNKNOWN_PROTOCOLS: opts.sanitizeAllowUnknownProtocols
+      ALLOW_UNKNOWN_PROTOCOLS: opts.sanitizeAllowUnknownProtocols,
       ALLOW_SELF_CLOSE_IN_ATTR: opts.sanitizeAllowSelfClose
     };