diff --git a/README.md b/README.md
index c82186a876c2fad2fc8ee955bfb877cb4656c1c8..5dc4c2a9d228d7b9f3a0d2aefdc72d26c3f10bbf 100644
--- a/README.md
+++ b/README.md
@@ -228,7 +228,7 @@ AppleHealthKit.getDateOfBirth(null, (err: Object, dob: string) => {
     if(this._handleHealthKitError(err, 'getDateOfBirth')){
         return;
     }
-    // use dob ...
+    // use dob ... (ex: '1986-09-01T12:20:30-04:00')
 });
 ```