diff --git a/src/widget/widget.tsx b/src/widget/widget.tsx
index 212654b..c706342 100644
--- a/src/widget/widget.tsx
+++ b/src/widget/widget.tsx
@@ -156,6 +156,7 @@ export default class Widget extends Component<any, IWidgetState> {
         data.append('driver', 'web');
         data.append('eventName', 'widgetOpened');
         data.append('eventData', this.props.conf.widgetOpenedEventData);
+        data.append('userId', window.botmanWidget.userId);
 
         axios.post(this.props.conf.chatServer, data).then(response => {
             const messages = response.data.messages || [];