diff --git a/shell/browser/api/message_port.cc b/shell/browser/api/message_port.cc
index d30866c1ed3a..f531f052176f 100644
--- a/shell/browser/api/message_port.cc
+++ b/shell/browser/api/message_port.cc
@@ -30,12 +30,12 @@ namespace electron {
 
 namespace {
 
-bool IsValidWrappable(const v8::Local<v8::Value>& obj) {
-  v8::Local<v8::Object> port = v8::Local<v8::Object>::Cast(obj);
-
-  if (!port->IsObject())
+bool IsValidWrappable(const v8::Local<v8::Value>& val) {
+  if (!val->IsObject())
     return false;
 
+  v8::Local<v8::Object> port = val.As<v8::Object>();
+
   if (port->InternalFieldCount() != gin::kNumberOfInternalFields)
     return false;