diff --git a/test/components/structures/MessagePanel-test.js b/test/components/structures/MessagePanel-test.js
index 0a51cb8918..c7287f1523 100644
--- a/test/components/structures/MessagePanel-test.js
+++ b/test/components/structures/MessagePanel-test.js
@@ -21,6 +21,7 @@ const ReactDOM = require("react-dom");
 const TestUtils = require('react-addons-test-utils');
 const expect = require('expect');
 import sinon from 'sinon';
+import { EventEmitter } from "events";
 
 const sdk = require('matrix-react-sdk');
 
@@ -46,8 +47,14 @@ const WrappedMessagePanel = React.createClass({
         };
     },
 
+    getInitialState: function() {
+        return {
+            resizeNotifier: new EventEmitter(),
+        };
+    },
+
     render: function() {
-        return <MessagePanel room={room} {...this.props} />;
+        return <MessagePanel room={room} {...this.props} resizeNotifier={this.state.resizeNotifier} />;
     },
 });
 
diff --git a/test/components/structures/ScrollPanel-test.js b/test/components/structures/ScrollPanel-test.js
index 0e091cdddf..41d0f4469b 100644
--- a/test/components/structures/ScrollPanel-test.js
+++ b/test/components/structures/ScrollPanel-test.js
@@ -19,6 +19,7 @@ const ReactDOM = require("react-dom");
 const ReactTestUtils = require('react-addons-test-utils');
 const expect = require('expect');
 import Promise from 'bluebird';
+import { EventEmitter } from "events";
 
 const sdk = require('matrix-react-sdk');
 
@@ -29,6 +30,7 @@ const Tester = React.createClass({
     getInitialState: function() {
         return {
             tileKeys: [],
+            resizeNotifier: new EventEmitter(),
         };
     },
 
@@ -130,7 +132,8 @@ const Tester = React.createClass({
         return (
             <ScrollPanel ref="sp"
                 onScroll={this._onScroll}
-                onFillRequest={this._onFillRequest}>
+                onFillRequest={this._onFillRequest}
+                resizeNotifier={this.state.resizeNotifier}>
                     { tiles }
             </ScrollPanel>
         );