diff --git a/includes/admin/settings/class-wc-settings-page.php b/includes/admin/settings/class-wc-settings-page.php
index 77ba97113c4..fb09893fcd1 100644
--- a/includes/admin/settings/class-wc-settings-page.php
+++ b/includes/admin/settings/class-wc-settings-page.php
@@ -19,7 +19,18 @@ if ( ! class_exists( 'WC_Settings_Page' ) ) :
  */
 abstract class WC_Settings_Page {
 
-	protected $id    = '';
+	/**
+	 * Setting page id.
+	 *
+	 * @var string
+	 */
+	protected $id = '';
+
+	/**
+	 * Setting page label.
+	 *
+	 * @var string
+	 */
 	protected $label = '';
 
 	/**
diff --git a/includes/admin/settings/class-wc-settings-tax.php b/includes/admin/settings/class-wc-settings-tax.php
index 85ffc45db93..f1c35101653 100644
--- a/includes/admin/settings/class-wc-settings-tax.php
+++ b/includes/admin/settings/class-wc-settings-tax.php
@@ -19,6 +19,11 @@ if ( ! class_exists( 'WC_Settings_Tax' ) ) :
  */
 class WC_Settings_Tax extends WC_Settings_Page {
 
+	/**
+	 * Setting page id.
+	 *
+	 * @var string
+	 */
 	protected $id = 'tax';
 
 	/**