diff --git a/includes/admin/core/class-admin-gdpr.php b/includes/admin/core/class-admin-gdpr.php
index d943d435..592e525e 100644
--- a/includes/admin/core/class-admin-gdpr.php
+++ b/includes/admin/core/class-admin-gdpr.php
@@ -24,7 +24,7 @@ if ( ! class_exists( 'um\admin\core\Admin_GDPR' ) ) {
 		 * Admin_GDPR constructor.
 		 */
 		function __construct() {
-			add_action( 'init', array( &$this, 'init_fields' ), 10 );
+			add_action( 'init', array( &$this, 'init_fields' ) );
 			add_action( 'admin_init', array( &$this, 'plugin_add_suggested_privacy_content' ), 20 );
 			add_filter( 'wp_privacy_personal_data_exporters', array( &$this, 'plugin_register_exporters' ) );
 			add_filter( 'wp_privacy_personal_data_erasers', array( &$this, 'plugin_register_erasers' ) );
diff --git a/includes/core/class-access.php b/includes/core/class-access.php
index 5277bc8a..798a94f2 100644
--- a/includes/core/class-access.php
+++ b/includes/core/class-access.php
@@ -81,6 +81,7 @@ if ( ! class_exists( 'um\core\Access' ) ) {
 			add_action( 'um_access_check_individual_term_settings', array( &$this, 'um_access_check_individual_term_settings' ) );
 			add_action( 'um_access_check_global_settings', array( &$this, 'um_access_check_global_settings' ) );
 
+			// Don't change hook and priority, because hooks for filtering queries are run before `init`.
 			add_action( 'plugins_loaded', array( &$this, 'initialize_hooks' ), 1 );
 		}
 
diff --git a/includes/core/class-mail.php b/includes/core/class-mail.php
index 71ec896e..d60e4525 100644
--- a/includes/core/class-mail.php
+++ b/includes/core/class-mail.php
@@ -49,7 +49,7 @@ if ( ! class_exists( 'um\core\Mail' ) ) {
 		public function __construct() {
 			//mandrill compatibility
 			add_filter( 'mandrill_nl2br', array( &$this, 'mandrill_nl2br' ) );
-			add_action( 'plugins_loaded', array( &$this, 'init_paths' ), 99 );
+			add_action( 'plugins_loaded', array( &$this, 'init_paths' ), 99 ); // @todo change to init.
 		}
 
 		/**