diff --git a/src/HtmlUtils.tsx b/src/HtmlUtils.tsx
index 1d5defe45d..ef5ac383e3 100644
--- a/src/HtmlUtils.tsx
+++ b/src/HtmlUtils.tsx
@@ -233,7 +233,7 @@ const transformTags: IExtendedSanitizeOptions["transformTags"] = { // custom to
     },
 };
 
-export const sanitizeHtmlParams: IExtendedSanitizeOptions = {
+const sanitizeHtmlParams: IExtendedSanitizeOptions = {
     allowedTags: [
         'font', // custom to matrix for IRC-style font coloring
         'del', // for markdown