diff --git a/native_mate/dictionary.cc b/native_mate/dictionary.cc
index 1a1750ff12e..168e5e75833 100644
--- a/native_mate/dictionary.cc
+++ b/native_mate/dictionary.cc
@@ -6,9 +6,8 @@
 
 namespace mate {
 
-Dictionary::Dictionary(v8::Isolate* isolate)
-    : isolate_(isolate),
-      object_(MATE_OBJECT_NEW(isolate)) {
+Dictionary::Dictionary()
+    : isolate_(NULL) {
 }
 
 Dictionary::Dictionary(v8::Isolate* isolate,
@@ -20,12 +19,6 @@ Dictionary::Dictionary(v8::Isolate* isolate,
 Dictionary::~Dictionary() {
 }
 
-Dictionary Dictionary::CreateEmpty(v8::Isolate* isolate) {
-  Dictionary dictionary(isolate);
-  dictionary.object_ = MATE_OBJECT_NEW(isolate);
-  return dictionary;
-}
-
 v8::Handle<v8::Value> Converter<Dictionary>::ToV8(v8::Isolate* isolate,
                                                   Dictionary val) {
   return val.object_;
diff --git a/native_mate/dictionary.h b/native_mate/dictionary.h
index 8c5dfeaae35..f901e7e27dc 100644
--- a/native_mate/dictionary.h
+++ b/native_mate/dictionary.h
@@ -24,12 +24,10 @@ namespace mate {
 //
 class Dictionary {
  public:
-  Dictionary(v8::Isolate* isolate = v8::Isolate::GetCurrent());
+  Dictionary();
   Dictionary(v8::Isolate* isolate, v8::Handle<v8::Object> object);
   ~Dictionary();
 
-  static Dictionary CreateEmpty(v8::Isolate* isolate);
-
   template<typename T>
   bool Get(const base::StringPiece& key, T* out) const {
     v8::Handle<v8::Value> val = object_->Get(StringToV8(isolate_, key));