diff --git a/Packages/ohif-viewerbase/client/lib/classes/LayoutManager.js b/Packages/ohif-viewerbase/client/lib/classes/LayoutManager.js
index 50dc88b2c..25f988653 100644
--- a/Packages/ohif-viewerbase/client/lib/classes/LayoutManager.js
+++ b/Packages/ohif-viewerbase/client/lib/classes/LayoutManager.js
@@ -2,7 +2,6 @@ import { Blaze } from 'meteor/blaze';
 import { Session } from 'meteor/session';
 import { Tracker } from 'meteor/tracker';
 import { Template } from 'meteor/templating';
-import { Random } from 'meteor/random';
 import { _ } from 'meteor/underscore';
 import { $ } from 'meteor/jquery';
 
@@ -201,7 +200,10 @@ export class LayoutManager {
      * @param  {integer} viewportIndex index of the viewport to be re-rendered
      * @param  {Object} data           instance data object
      */
-    rerenderViewportWithNewDisplaySet(viewportIndex, data) {
+    rerenderViewportWithNewDisplaySet(viewportIndex, viewportData) {
+        // Clone the data to prevent changing the original object
+        const data = _.clone(viewportData);
+
         OHIF.log.info(`LayoutManager rerenderViewportWithNewDisplaySet: ${viewportIndex}`);
 
         // The parent container is identified because it is later removed from the DOM