diff --git a/bigbluebutton-html5/imports/ui/components/breakout-room/component.jsx b/bigbluebutton-html5/imports/ui/components/breakout-room/component.jsx
index 376735d9c2be506b040c0ad24beba7dee8ebdfbc..543d0d52d4cd21662b36252cbc25026e6fbd11cc 100644
--- a/bigbluebutton-html5/imports/ui/components/breakout-room/component.jsx
+++ b/bigbluebutton-html5/imports/ui/components/breakout-room/component.jsx
@@ -200,7 +200,7 @@ class BreakoutRoom extends Component {
           {intl.formatMessage(intlMessages.breakoutRoom, breakout.sequence.toString())}
           <span className={styles.usersAssignedNumberLabel}>
             (
-            {breakout.users.length}
+            {new Set(breakout.users.map(user => user.intId)).size}
             )
           </span>
         </span>