diff --git a/src/Intervention/Image/Image.php b/src/Intervention/Image/Image.php
index 2a499926..9616593f 100644
--- a/src/Intervention/Image/Image.php
+++ b/src/Intervention/Image/Image.php
@@ -78,6 +78,13 @@ class Image
      */
     protected $original;
 
+    /**
+     * Identifier for cached images
+     * 
+     * @var boolean
+     */
+    public $cached = false;
+
     /**
      * Create a new instance of Image class
      *