diff --git a/src/components/views/rooms/MessageComposerInput.js b/src/components/views/rooms/MessageComposerInput.js
index f9395abe59..89e4107a56 100644
--- a/src/components/views/rooms/MessageComposerInput.js
+++ b/src/components/views/rooms/MessageComposerInput.js
@@ -337,7 +337,7 @@ export default class MessageComposerInput extends React.Component {
 
     componentDidMount() {
         this.dispatcherRef = dis.register(this.onAction);
-        this.historyManager = new ComposerHistoryManager(this.props.room.roomId);
+        this.historyManager = new ComposerHistoryManager(this.props.room.roomId, 'mx_slate_composer_history_');
     }
 
     componentWillUnmount() {