diff --git a/src/components/structures/RoomStatusBar.js b/src/components/structures/RoomStatusBar.js
index 464ab7641b..5632b10c7f 100644
--- a/src/components/structures/RoomStatusBar.js
+++ b/src/components/structures/RoomStatusBar.js
@@ -241,7 +241,7 @@ module.exports = React.createClass({
 
         if (othersCount > 0) {
             avatars.push(
-                <span className="mx_RoomStatusBar_typingIndicatorRemaining">
+                <span className="mx_RoomStatusBar_typingIndicatorRemaining" key="others">
                     +{othersCount}
                 </span>
             );