diff --git a/static/sfu.js b/static/sfu.js
index c6f0f43..f0d0297 100644
--- a/static/sfu.js
+++ b/static/sfu.js
@@ -738,7 +738,7 @@ function gotPermissions(perm) {
     displayUsername();
 }
 
-const urlRegexp = /https?:\/\/[-a-zA-Z0-9@:%/._\+~#=?]+[-a-zA-Z0-9@:%/_\+~#=]/g;
+const urlRegexp = /https?:\/\/[-a-zA-Z0-9@:%/._\\+~#=?]+[-a-zA-Z0-9@:%/_\\+~#=]/g;
 
 function formatLine(line) {
     let r = new RegExp(urlRegexp);