diff --git a/src/ng2-datetime/ng2-datetime.ts b/src/ng2-datetime/ng2-datetime.ts
index 2769dd9e..817b37db 100644
--- a/src/ng2-datetime/ng2-datetime.ts
+++ b/src/ng2-datetime/ng2-datetime.ts
@@ -123,7 +123,7 @@ export class NKDatetime implements ControlValueAccessor, AfterViewInit, OnDestro
     }
 
     writeValue(value: any) {
-        this.date = value;
+        this.date = new Date(value);
         if (isDate(this.date)) {
             setTimeout(() => {
                 this.updateModel(this.date);
@@ -266,5 +266,5 @@ function uniqueId(prefix: string): string {
 }
 
 function isDate(obj: any) {
-    return Object.prototype.toString.call(obj) === '[object Date]';
+    return obj && obj.toString() !== 'Invalid Date';
 }