diff --git a/lib/model-builder.js b/lib/model-builder.js
index a5076488..8b86e508 100644
--- a/lib/model-builder.js
+++ b/lib/model-builder.js
@@ -380,7 +380,7 @@ ModelBuilder.prototype.define = function defineClass(className, properties, sett
             } else {
               // Assume the type constructor handles Constructor() call
               // If not, we should call new DataType(value).valueOf();
-              this.__data[propertyName] = DataType(value);
+              this.__data[propertyName] = (value instanceof DataType) ? value : DataType(value);
             }
           }
         }
diff --git a/package.json b/package.json
index 4d725ab8..06f35ecf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "loopback-datasource-juggler",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "LoopBack DataSoure Juggler",
   "keywords": [
     "StrongLoop",