diff --git a/lib/browser/guest-window-manager.js b/lib/browser/guest-window-manager.js
index bd9473dda879..50e890e225a3 100644
--- a/lib/browser/guest-window-manager.js
+++ b/lib/browser/guest-window-manager.js
@@ -25,6 +25,7 @@ const mergeOptions = function (child, parent, visited) {
 
   visited.add(parent)
   for (const key in parent) {
+    if (key === 'isBrowserView') continue
     if (!hasProp.call(parent, key)) continue
     if (key in child) continue