diff --git a/src/components/views/rooms/EventTile.js b/src/components/views/rooms/EventTile.js
index 56ac082f2a..c2e51d878b 100644
--- a/src/components/views/rooms/EventTile.js
+++ b/src/components/views/rooms/EventTile.js
@@ -154,6 +154,11 @@ module.exports = withMatrixClient(React.createClass({
         isTwelveHour: PropTypes.bool,
     },
 
+    defaultProps: {
+        // no-op function because onWidgetLoad is optional yet some subcomponents assume its existence
+        onWidgetLoad: function() {},
+    },
+
     getInitialState: function() {
         return {
             // Whether the context menu is being displayed.
diff --git a/src/components/views/rooms/ReplyPreview.js b/src/components/views/rooms/ReplyPreview.js
index dd11b0df33..46e2826634 100644
--- a/src/components/views/rooms/ReplyPreview.js
+++ b/src/components/views/rooms/ReplyPreview.js
@@ -75,11 +75,8 @@ export default class ReplyPreview extends React.Component {
                 <EventTile last={true}
                            tileShape="reply_preview"
                            mxEvent={this.state.event}
-                           onWidgetLoad={dummyOnWidgetLoad}
                            isTwelveHour={SettingsStore.getValue("showTwelveHourTimestamps")} />
             </div>
         </div>;
     }
 }
-
-function dummyOnWidgetLoad() {}