diff --git a/www/common/onlyoffice/inner.js b/www/common/onlyoffice/inner.js
index 5b9efc60e..b6b1bf63d 100644
--- a/www/common/onlyoffice/inner.js
+++ b/www/common/onlyoffice/inner.js
@@ -2813,14 +2813,21 @@ Uncaught TypeError: Cannot read property 'calculatedType' of null
             });
         };
 
-        var importFile = function(content) {
-            // Abort if there is another real user in the channel (history keeper excluded)
+        // Abort if there is another real user in the channel (history keeper excluded)
+        var checkChannelUsers = function () {
             var m = metadataMgr.getChannelMembers().slice().filter(function (nId) {
                 return nId.length === 32;
             });
             if (m.length > 1) {
                 UI.removeModals();
-                return void UI.alert(Messages.oo_cantUpload);
+                UI.alert(Messages.oo_cantUpload);
+                return true;
+            }
+        };
+
+        var importFile = function(content) {
+            if (checkChannelUsers()) {
+                return;
             }
             if (!content) {
                 UI.removeModals();
@@ -2862,6 +2869,10 @@ Uncaught TypeError: Cannot read property 'calculatedType' of null
             if (!supportsXLSX()) {
                 return void UI.alert(Messages.oo_invalidFormat);
             }
+            if (checkChannelUsers()) {
+                return;
+            }
+
             var div = h('div.cp-oo-x2tXls', [
                 Icons.get('loading'),
                 h('span', Messages.oo_importInProgress)