diff --git a/www/common/onlyoffice/inner.js b/www/common/onlyoffice/inner.js
index 422f55427..8e67d9b44 100644
--- a/www/common/onlyoffice/inner.js
+++ b/www/common/onlyoffice/inner.js
@@ -957,7 +957,7 @@ define([
                 const nId = id.slice(0,32);
                 const username = (users[nId] || {}).name || Messages.anonymous;
                 return {
-                    id: String(user.ooid),
+                    id: String(user.ooid) + user.index,
                     idOriginal: String(user.ooid),
                     username,
                     indexUser: user.index,