diff --git a/includes/action-scheduler/class-email.php b/includes/action-scheduler/class-email.php
index 05299759..9a014fe4 100644
--- a/includes/action-scheduler/class-email.php
+++ b/includes/action-scheduler/class-email.php
@@ -1,5 +1,4 @@
 <?php
-
 namespace um\action_scheduler;
 
 if ( ! defined( 'ABSPATH' ) ) {
@@ -7,6 +6,12 @@ if ( ! defined( 'ABSPATH' ) ) {
 }
 
 if ( ! class_exists( 'um\action_scheduler\Email' ) ) {
+
+	/**
+	 * Class Email
+	 *
+	 * @package um\action_scheduler
+	 */
 	class Email {
 
 		public function __construct() {
@@ -17,7 +22,7 @@ if ( ! class_exists( 'um\action_scheduler\Email' ) ) {
 		 * Send an email after user account was deleted.
 		 *
 		 * @param string $user_email User email.
-		 * @param string $template Template name.
+		 * @param string $template   Template name.
 		 */
 		public function send_deleted_user_email( $user_email, $template ) {
 			if ( empty( $user_email ) && empty( $template ) ) {
diff --git a/includes/action-scheduler/class-init.php b/includes/action-scheduler/class-init.php
index b05930a2..489df57f 100644
--- a/includes/action-scheduler/class-init.php
+++ b/includes/action-scheduler/class-init.php
@@ -1,5 +1,4 @@
 <?php
-
 namespace um\action_scheduler;
 
 if ( ! defined( 'ABSPATH' ) ) {
diff --git a/includes/action-scheduler/class-proxy.php b/includes/action-scheduler/class-proxy.php
index 07069e70..55050c67 100644
--- a/includes/action-scheduler/class-proxy.php
+++ b/includes/action-scheduler/class-proxy.php
@@ -1,12 +1,11 @@
 <?php
-
 namespace um\action_scheduler;
 
 if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
 
-if ( ! class_exists( 'um\Action_Scheduler\Proxy' ) ) {
+if ( ! class_exists( 'um\action_scheduler\Proxy' ) ) {
 
 	/**
 	 * Class Action_Scheduler
@@ -24,7 +23,10 @@ if ( ! class_exists( 'um\Action_Scheduler\Proxy' ) ) {
 		 * Action_Scheduler constructor.
 		 */
 		public function __construct() {
-			require_once UM_PATH . 'includes/lib/action-scheduler/action-scheduler.php';
+			$lib_path = UM_PATH . 'includes/lib/action-scheduler/action-scheduler.php';
+			if ( file_exists( $lib_path ) ) {
+				require_once UM_PATH . 'includes/lib/action-scheduler/action-scheduler.php';
+			}
 		}
 
 		/**