diff --git a/src/HtmlUtils.tsx b/src/HtmlUtils.tsx
index 5e83fdc2a0..dfe5cba3fd 100644
--- a/src/HtmlUtils.tsx
+++ b/src/HtmlUtils.tsx
@@ -58,7 +58,7 @@ const BIGEMOJI_REGEX = new RegExp(`^(${EMOJIBASE_REGEX.source})+$`, 'i');
 
 const COLOR_REGEX = /^#[0-9a-fA-F]{6}$/;
 
-export const PERMITTED_URL_SCHEMES = ['http', 'https', 'ftp', 'mailto', 'magnet'];
+export const PERMITTED_URL_SCHEMES = ['http', 'https', 'ftp', 'mailto', 'magnet', 'matrix'];
 
 const MEDIA_API_MXC_REGEX = /\/_matrix\/media\/r0\/(?:download|thumbnail)\/(.+?)\/(.+?)(?:[?/]|$)/;