diff --git a/lib/ApplicationCharge.php b/lib/ApplicationCharge.php
index 2e55b77..b557911 100644
--- a/lib/ApplicationCharge.php
+++ b/lib/ApplicationCharge.php
@@ -21,4 +21,9 @@ class ApplicationCharge extends ShopifyResource
      * @inheritDoc
      */
     public $countEnabled = false;
-}
\ No newline at end of file
+    
+    // To activate ApplicationCharge
+    protected $customPostActions = array(
+       'activate',
+   );
+}