diff --git a/server.js b/server.js
index 7b5a7fb9f..399eb1442 100644
--- a/server.js
+++ b/server.js
@@ -70,6 +70,7 @@ var setHeaders = (function () {
         return function (req, res) {
             const h = [
                     /^\/pad(2)?\/inner\.html.*/,
+                    /^\/common\/onlyoffice\/.*\/index\.html.*/,
                     /^\/sheet\/inner\.html.*/,
                     /^\/ooslide\/inner\.html.*/,
                     /^\/oodoc\/inner\.html.*/,