diff --git a/phpBB/phpbb/notification/type/approve_post.php b/phpBB/phpbb/notification/type/approve_post.php
index 0aad19d6bf..22c9076adc 100644
--- a/phpBB/phpbb/notification/type/approve_post.php
+++ b/phpBB/phpbb/notification/type/approve_post.php
@@ -81,14 +81,7 @@ class approve_post extends \phpbb\notification\type\post
 		$users = array();
 		$users[$post['poster_id']] = array('');
 
-		$auth_read = $this->auth->acl_get_list(array_keys($users), 'f_read', $post['forum_id']);
-
-		if (empty($auth_read))
-		{
-			return array();
-		}
-
-		return $this->check_user_notification_options($auth_read[$post['forum_id']]['f_read'], array_merge($options, array(
+		return $this->get_authorised_recipients(array_keys($users), $post['forum_id'], array_merge($options, array(
 			'item_type'		=> self::$notification_option['id'],
 		)));
 	}
diff --git a/phpBB/phpbb/notification/type/approve_topic.php b/phpBB/phpbb/notification/type/approve_topic.php
index e649f3920e..77e53a0064 100644
--- a/phpBB/phpbb/notification/type/approve_topic.php
+++ b/phpBB/phpbb/notification/type/approve_topic.php
@@ -81,14 +81,7 @@ class approve_topic extends \phpbb\notification\type\topic
 		$users = array();
 		$users[$post['poster_id']] = array('');
 
-		$auth_read = $this->auth->acl_get_list(array_keys($users), 'f_read', $post['forum_id']);
-
-		if (empty($auth_read))
-		{
-			return array();
-		}
-
-		return $this->check_user_notification_options($auth_read[$post['forum_id']]['f_read'], array_merge($options, array(
+		return $this->get_authorised_recipients(array_keys($users), $post['forum_id'], array_merge($options, array(
 			'item_type'		=> self::$notification_option['id'],
 		)));
 	}
diff --git a/phpBB/phpbb/notification/type/base.php b/phpBB/phpbb/notification/type/base.php
index a11ad76db9..4ead06071e 100644
--- a/phpBB/phpbb/notification/type/base.php
+++ b/phpBB/phpbb/notification/type/base.php
@@ -533,4 +533,37 @@ abstract class base implements \phpbb\notification\type\type_interface
 			WHERE ' . $where;
 		$this->db->sql_query($sql);
 	}
+
+	/**
+	 * Get a list of users that are authorised to receive notifications
+	 *
+	 * @param array $users Array of users that have subscribed to a notification
+	 * @param int $forum_id Forum ID of the forum
+	 * @param array $options Array of notification options
+	 * @param bool $sort Whether the users array should be sorted. Default: false
+	 * @return array Array of users that are authorised recipients
+	 */
+	protected function get_authorised_recipients($users, $forum_id, $options, $sort = false)
+	{
+		if (empty($users))
+		{
+			return array();
+		}
+
+		$users = array_unique($users);
+
+		if ($sort)
+		{
+			sort($users);
+		}
+
+		$auth_read = $this->auth->acl_get_list($users, 'f_read', $forum_id);
+
+		if (empty($auth_read))
+		{
+			return array();
+		}
+
+		return $this->check_user_notification_options($auth_read[$forum_id]['f_read'], $options);
+	}
 }
diff --git a/phpBB/phpbb/notification/type/bookmark.php b/phpBB/phpbb/notification/type/bookmark.php
index c83288cfb8..21180b3b53 100644
--- a/phpBB/phpbb/notification/type/bookmark.php
+++ b/phpBB/phpbb/notification/type/bookmark.php
@@ -83,20 +83,12 @@ class bookmark extends \phpbb\notification\type\post
 		}
 		$this->db->sql_freeresult($result);
 
-		if (empty($users))
+		$notify_users = $this->get_authorised_recipients($users, $post['forum_id'], $options, true);
+
+		if (empty($notify_users))
 		{
 			return array();
 		}
-		sort($users);
-
-		$auth_read = $this->auth->acl_get_list($users, 'f_read', $post['forum_id']);
-
-		if (empty($auth_read))
-		{
-			return array();
-		}
-
-		$notify_users = $this->check_user_notification_options($auth_read[$post['forum_id']]['f_read'], $options);
 
 		// Try to find the users who already have been notified about replies and have not read the topic since and just update their notifications
 		$update_notifications = array();
diff --git a/phpBB/phpbb/notification/type/post.php b/phpBB/phpbb/notification/type/post.php
index 357176ec35..1eba4a6a88 100644
--- a/phpBB/phpbb/notification/type/post.php
+++ b/phpBB/phpbb/notification/type/post.php
@@ -123,23 +123,13 @@ class post extends \phpbb\notification\type\base
 		}
 		$this->db->sql_freeresult($result);
 
-		if (empty($users))
+		$notify_users = $this->get_authorised_recipients($users, $post['forum_id'], $options, true);
+
+		if (empty($notify_users))
 		{
 			return array();
 		}
 
-		$users = array_unique($users);
-		sort($users);
-
-		$auth_read = $this->auth->acl_get_list($users, 'f_read', $post['forum_id']);
-
-		if (empty($auth_read))
-		{
-			return array();
-		}
-
-		$notify_users = $this->check_user_notification_options($auth_read[$post['forum_id']]['f_read'], $options);
-
 		// Try to find the users who already have been notified about replies and have not read the topic since and just update their notifications
 		$update_notifications = array();
 		$sql = 'SELECT n.*
diff --git a/phpBB/phpbb/notification/type/quote.php b/phpBB/phpbb/notification/type/quote.php
index 6e672e6fbd..5c3c822ec2 100644
--- a/phpBB/phpbb/notification/type/quote.php
+++ b/phpBB/phpbb/notification/type/quote.php
@@ -102,22 +102,7 @@ class quote extends \phpbb\notification\type\post
 		}
 		$this->db->sql_freeresult($result);
 
-		if (empty($users))
-		{
-			return array();
-		}
-		sort($users);
-
-		$auth_read = $this->auth->acl_get_list($users, 'f_read', $post['forum_id']);
-
-		if (empty($auth_read))
-		{
-			return array();
-		}
-
-		$notify_users = $this->check_user_notification_options($auth_read[$post['forum_id']]['f_read'], $options);
-
-		return $notify_users;
+		return $this->get_authorised_recipients($users, $post['forum_id'], $options, true);
 	}
 
 	/**
diff --git a/phpBB/phpbb/notification/type/topic.php b/phpBB/phpbb/notification/type/topic.php
index 289e45bedb..af199fb765 100644
--- a/phpBB/phpbb/notification/type/topic.php
+++ b/phpBB/phpbb/notification/type/topic.php
@@ -111,19 +111,7 @@ class topic extends \phpbb\notification\type\base
 		}
 		$this->db->sql_freeresult($result);
 
-		if (empty($users))
-		{
-			return array();
-		}
-
-		$auth_read = $this->auth->acl_get_list($users, 'f_read', $topic['forum_id']);
-
-		if (empty($auth_read))
-		{
-			return array();
-		}
-
-		return $this->check_user_notification_options($auth_read[$topic['forum_id']]['f_read'], $options);
+		return $this->get_authorised_recipients($users, $topic['forum_id'], $options);
 	}
 
 	/**