diff --git a/packages/devextreme/js/ui/chat.d.ts b/packages/devextreme/js/ui/chat.d.ts
index 19dc6d7143f6..1dfbc8f57e59 100644
--- a/packages/devextreme/js/ui/chat.d.ts
+++ b/packages/devextreme/js/ui/chat.d.ts
@@ -1,4 +1,5 @@
 import Widget, { WidgetOptions } from './widget/ui.widget';
+
 import {
     Cancelable,
     EventInfo,