--- a/mobile/android/chrome/content/browser.js
+++ b/mobile/android/chrome/content/browser.js
@@ -2795,22 +2795,19 @@ Tab.prototype = {
         if (target != this.browser.contentDocument)
           return;
 
         // Sample the background color of the page and pass it along. (This is used to draw the
         // checkerboard.) Right now we don't detect changes in the background color after this
         // event fires; it's not clear that doing so is worth the effort.
         var backgroundColor = null;
         try {
-          let browser = BrowserApp.selectedBrowser;
-          if (browser) {
-            let { contentDocument, contentWindow } = browser;
-            let computedStyle = contentWindow.getComputedStyle(contentDocument.body);
-            backgroundColor = computedStyle.backgroundColor;
-          }
+          let { contentDocument, contentWindow } = this.browser;
+          let computedStyle = contentWindow.getComputedStyle(contentDocument.body);
+          backgroundColor = computedStyle.backgroundColor;
         } catch (e) {
           // Ignore. Catching and ignoring exceptions here ensures that Talos succeeds.
         }
 
         sendMessageToJava({
           gecko: {
             type: "DOMContentLoaded",
             tabID: this.id,