diff --git a/src/HAB/Pica/Record/Field.php b/src/HAB/Pica/Record/Field.php
index 594220053bab8ccaef1939bbd477cb203e748e1c..43a3a707f0a3c6513796e884a651b0da9b5fd550 100644
--- a/src/HAB/Pica/Record/Field.php
+++ b/src/HAB/Pica/Record/Field.php
@@ -132,6 +132,13 @@ class Field
      */
     protected $_shorthand;
 
+    /**
+     * Subfields.
+     *
+     * @var array
+     */
+    protected $_subfields;
+
     /**
      * Constructor.
      *