diff --git a/lib/model.js b/lib/model.js
index b1c28a99..736f3667 100644
--- a/lib/model.js
+++ b/lib/model.js
@@ -175,7 +175,8 @@ ModelBaseClass.prototype._initProperties = function (data, options) {
 
     // Handle complex types (JSON/Object)
     var type = properties[p].type;
-    if (! BASE_TYPES[type.name]) {
+    if (!BASE_TYPES[type.name]) {
+      
       if (typeof self.__data[p] !== 'object' && self.__data[p]) {
         try {
           self.__data[p] = JSON.parse(self.__data[p] + '');
@@ -183,7 +184,14 @@ ModelBaseClass.prototype._initProperties = function (data, options) {
           self.__data[p] = String(self.__data[p]);
         }
       }
-      if (type.name === 'Array' || Array.isArray(type)) {
+      
+      if (type.prototype instanceof ModelBaseClass) {
+        if (!(self.__data[p] instanceof type)
+          && typeof self.__data[p] === 'object'
+          && self.__data[p] !== null ) {
+          self.__data[p] = new type(self.__data[p]);
+        }
+      } else if (type.name === 'Array' || Array.isArray(type)) {
         if (!(self.__data[p] instanceof List)
           && self.__data[p] !== undefined
           && self.__data[p] !== null ) {