diff --git a/src/Interfaces/CollectionInterface.php b/src/Interfaces/CollectionInterface.php
index d51cee76..fc87d626 100644
--- a/src/Interfaces/CollectionInterface.php
+++ b/src/Interfaces/CollectionInterface.php
@@ -5,7 +5,7 @@ namespace Intervention\Image\Interfaces;
 interface CollectionInterface
 {
     public function push($item): CollectionInterface;
-    public function get(int $key);
+    public function get(int $key, $default = null);
     public function has(int $key);
     public function first();
     public function last();