diff --git a/src/ArduinoJson/Object/ObjectConstRef.hpp b/src/ArduinoJson/Object/ObjectConstRef.hpp
new file mode 100644
index 00000000..fc62d9b1
--- /dev/null
+++ b/src/ArduinoJson/Object/ObjectConstRef.hpp
@@ -0,0 +1,138 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2022, Benoit BLANCHON
+// MIT License
+
+#pragma once
+
+#include <ArduinoJson/Object/ObjectIterator.hpp>
+#include <ArduinoJson/Variant/VariantOperators.hpp>
+
+namespace ARDUINOJSON_NAMESPACE {
+
+class ObjectConstRef : public VariantOperators<ObjectConstRef> {
+  friend class ObjectRef;
+  friend class VariantAttorney;
+
+ public:
+  typedef ObjectConstIterator iterator;
+
+  ObjectConstRef() : _data(0) {}
+  ObjectConstRef(const CollectionData* data) : _data(data) {}
+
+  operator VariantConstRef() const {
+    return VariantConstRef(collectionToVariant(_data));
+  }
+
+  FORCE_INLINE bool isNull() const {
+    return _data == 0;
+  }
+
+  FORCE_INLINE operator bool() const {
+    return _data != 0;
+  }
+
+  FORCE_INLINE size_t memoryUsage() const {
+    return _data ? _data->memoryUsage() : 0;
+  }
+
+  FORCE_INLINE size_t nesting() const {
+    return variantNesting(collectionToVariant(_data));
+  }
+
+  FORCE_INLINE size_t size() const {
+    return _data ? _data->size() : 0;
+  }
+
+  FORCE_INLINE iterator begin() const {
+    if (!_data)
+      return iterator();
+    return iterator(_data->head());
+  }
+
+  FORCE_INLINE iterator end() const {
+    return iterator();
+  }
+
+  // containsKey(const std::string&) const
+  // containsKey(const String&) const
+  template <typename TString>
+  FORCE_INLINE bool containsKey(const TString& key) const {
+    return getMember(adaptString(key)) != 0;
+  }
+
+  // containsKey(char*) const
+  // containsKey(const char*) const
+  // containsKey(const __FlashStringHelper*) const
+  template <typename TChar>
+  FORCE_INLINE bool containsKey(TChar* key) const {
+    return getMember(adaptString(key)) != 0;
+  }
+
+  // operator[](const std::string&) const
+  // operator[](const String&) const
+  template <typename TString>
+  FORCE_INLINE
+      typename enable_if<IsString<TString>::value, VariantConstRef>::type
+      operator[](const TString& key) const {
+    return VariantConstRef(getMember(adaptString(key)));
+  }
+
+  // operator[](char*) const
+  // operator[](const char*) const
+  // operator[](const __FlashStringHelper*) const
+  template <typename TChar>
+  FORCE_INLINE
+      typename enable_if<IsString<TChar*>::value, VariantConstRef>::type
+      operator[](TChar* key) const {
+    return VariantConstRef(getMember(adaptString(key)));
+  }
+
+  FORCE_INLINE bool operator==(ObjectConstRef rhs) const {
+    if (_data == rhs._data)
+      return true;
+
+    if (!_data || !rhs._data)
+      return false;
+
+    size_t count = 0;
+    for (iterator it = begin(); it != end(); ++it) {
+      if (it->value() != rhs[it->key()])
+        return false;
+      count++;
+    }
+    return count == rhs.size();
+  }
+
+ private:
+  const VariantData* getData() const {
+    return collectionToVariant(_data);
+  }
+
+  template <typename TAdaptedString>
+  const VariantData* getMember(TAdaptedString key) const {
+    if (!_data)
+      return 0;
+    return _data->getMember(key);
+  }
+
+  const CollectionData* _data;
+};
+
+template <>
+struct Converter<ObjectConstRef> : private VariantAttorney {
+  static void toJson(VariantConstRef src, VariantRef dst) {
+    variantCopyFrom(getData(dst), getData(src), getPool(dst));
+  }
+
+  static ObjectConstRef fromJson(VariantConstRef src) {
+    const VariantData* data = getData(src);
+    return data != 0 ? data->asObject() : 0;
+  }
+
+  static bool checkJson(VariantConstRef src) {
+    const VariantData* data = getData(src);
+    return data && data->isObject();
+  }
+};
+
+}  // namespace ARDUINOJSON_NAMESPACE
diff --git a/src/ArduinoJson/Object/ObjectRef.hpp b/src/ArduinoJson/Object/ObjectRef.hpp
index dee81675..469316dd 100644
--- a/src/ArduinoJson/Object/ObjectRef.hpp
+++ b/src/ArduinoJson/Object/ObjectRef.hpp
@@ -5,121 +5,12 @@
 #pragma once
 
 #include <ArduinoJson/Object/MemberProxy.hpp>
-#include <ArduinoJson/Object/ObjectIterator.hpp>
+#include <ArduinoJson/Object/ObjectConstRef.hpp>
 
 namespace ARDUINOJSON_NAMESPACE {
 
 class ArrayRef;
 
-class ObjectConstRef : public VariantOperators<ObjectConstRef> {
-  friend class ObjectRef;
-  friend class VariantAttorney;
-
- public:
-  typedef ObjectConstIterator iterator;
-
-  ObjectConstRef() : _data(0) {}
-  ObjectConstRef(const CollectionData* data) : _data(data) {}
-
-  operator VariantConstRef() const {
-    return VariantConstRef(collectionToVariant(_data));
-  }
-
-  FORCE_INLINE bool isNull() const {
-    return _data == 0;
-  }
-
-  FORCE_INLINE operator bool() const {
-    return _data != 0;
-  }
-
-  FORCE_INLINE size_t memoryUsage() const {
-    return _data ? _data->memoryUsage() : 0;
-  }
-
-  FORCE_INLINE size_t nesting() const {
-    return variantNesting(collectionToVariant(_data));
-  }
-
-  FORCE_INLINE size_t size() const {
-    return _data ? _data->size() : 0;
-  }
-
-  FORCE_INLINE iterator begin() const {
-    if (!_data)
-      return iterator();
-    return iterator(_data->head());
-  }
-
-  FORCE_INLINE iterator end() const {
-    return iterator();
-  }
-
-  // containsKey(const std::string&) const
-  // containsKey(const String&) const
-  template <typename TString>
-  FORCE_INLINE bool containsKey(const TString& key) const {
-    return getMember(adaptString(key)) != 0;
-  }
-
-  // containsKey(char*) const
-  // containsKey(const char*) const
-  // containsKey(const __FlashStringHelper*) const
-  template <typename TChar>
-  FORCE_INLINE bool containsKey(TChar* key) const {
-    return getMember(adaptString(key)) != 0;
-  }
-
-  // operator[](const std::string&) const
-  // operator[](const String&) const
-  template <typename TString>
-  FORCE_INLINE
-      typename enable_if<IsString<TString>::value, VariantConstRef>::type
-      operator[](const TString& key) const {
-    return VariantConstRef(getMember(adaptString(key)));
-  }
-
-  // operator[](char*) const
-  // operator[](const char*) const
-  // operator[](const __FlashStringHelper*) const
-  template <typename TChar>
-  FORCE_INLINE
-      typename enable_if<IsString<TChar*>::value, VariantConstRef>::type
-      operator[](TChar* key) const {
-    return VariantConstRef(getMember(adaptString(key)));
-  }
-
-  FORCE_INLINE bool operator==(ObjectConstRef rhs) const {
-    if (_data == rhs._data)
-      return true;
-
-    if (!_data || !rhs._data)
-      return false;
-
-    size_t count = 0;
-    for (iterator it = begin(); it != end(); ++it) {
-      if (it->value() != rhs[it->key()])
-        return false;
-      count++;
-    }
-    return count == rhs.size();
-  }
-
- private:
-  const VariantData* getData() const {
-    return collectionToVariant(_data);
-  }
-
-  template <typename TAdaptedString>
-  const VariantData* getMember(TAdaptedString key) const {
-    if (!_data)
-      return 0;
-    return _data->getMember(key);
-  }
-
-  const CollectionData* _data;
-};
-
 class ObjectRef : public VariantOperators<ObjectRef> {
   friend class VariantAttorney;
 
@@ -283,23 +174,6 @@ class ObjectRef : public VariantOperators<ObjectRef> {
   MemoryPool* _pool;
 };
 
-template <>
-struct Converter<ObjectConstRef> : private VariantAttorney {
-  static void toJson(VariantConstRef src, VariantRef dst) {
-    variantCopyFrom(getData(dst), getData(src), getPool(dst));
-  }
-
-  static ObjectConstRef fromJson(VariantConstRef src) {
-    const VariantData* data = getData(src);
-    return data != 0 ? data->asObject() : 0;
-  }
-
-  static bool checkJson(VariantConstRef src) {
-    const VariantData* data = getData(src);
-    return data && data->isObject();
-  }
-};
-
 template <>
 struct Converter<ObjectRef> : private VariantAttorney {
   static void toJson(VariantConstRef src, VariantRef dst) {