diff --git a/src/scenes/DocumentScene/DocumentSceneStore.js b/src/scenes/DocumentScene/DocumentSceneStore.js
index a44a9b71..acbac48c 100644
--- a/src/scenes/DocumentScene/DocumentSceneStore.js
+++ b/src/scenes/DocumentScene/DocumentSceneStore.js
@@ -1,5 +1,5 @@
 import _isEqual from 'lodash/isEqual';
-import { observable, action, computed, runInAction } from 'mobx';
+import { observable, action, computed, runInAction, toJS } from 'mobx';
 import { client } from 'utils/ApiClient';
 import { browserHistory } from 'react-router';