diff --git a/src/CollectionInterface.php b/src/CollectionInterface.php
index 55ef9e9..f8c7c5d 100644
--- a/src/CollectionInterface.php
+++ b/src/CollectionInterface.php
@@ -19,7 +19,7 @@ interface CollectionInterface extends \ArrayAccess, \Countable, \IteratorAggrega
      * 
      * @return \VersatileCollections\CollectionInterface newly created collection
      */
-    public static function makeNewCollection(array $items);
+    public static function makeNewCollection(array $items=[]);
 
 
     /**
diff --git a/versatile-collections.png b/versatile-collections.png
index 1962c53..e82c9e1 100644
Binary files a/versatile-collections.png and b/versatile-collections.png differ