diff --git a/mobile/android/chrome/content/SelectionHandler.js b/mobile/android/chrome/content/SelectionHandler.js
index 498b97117450..9df76a501b72 100644
--- a/mobile/android/chrome/content/SelectionHandler.js
+++ b/mobile/android/chrome/content/SelectionHandler.js
@@ -965,7 +965,7 @@ var SelectionHandler = {
   _moveCaret: function sh_moveCaret(aX, aY) {
     // Get rect of text inside element
     let range = document.createRange();
-    range.selectNodeContents(this._targetElement.QueryInterface(Ci.nsIDOMNSEditableElement).editor.rootElement);
+    range.selectNodeContents(this._getEditor().rootElement);
     let textBounds = range.getBoundingClientRect();
 
     // Get rect of editor