diff --git a/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php b/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
index 99a491de27..f3096444f2 100644
--- a/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
+++ b/src/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
@@ -67,7 +67,7 @@ class WP_REST_Autosaves_Controller extends WP_REST_Revisions_Controller {
 
 		$this->parent_controller    = $parent_controller;
 		$this->revisions_controller = new WP_REST_Revisions_Controller( $parent_post_type );
-		$this->rest_namespace       = 'wp/v2';
+		$this->namespace            = 'wp/v2';
 		$this->rest_base            = 'autosaves';
 		$this->parent_base          = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;
 	}
@@ -81,7 +81,7 @@ class WP_REST_Autosaves_Controller extends WP_REST_Revisions_Controller {
 	 */
 	public function register_routes() {
 		register_rest_route(
-			$this->rest_namespace,
+			$this->namespace,
 			'/' . $this->parent_base . '/(?P<id>[\d]+)/' . $this->rest_base,
 			array(
 				'args'   => array(
@@ -107,7 +107,7 @@ class WP_REST_Autosaves_Controller extends WP_REST_Revisions_Controller {
 		);
 
 		register_rest_route(
-			$this->rest_namespace,
+			$this->namespace,
 			'/' . $this->parent_base . '/(?P<parent>[\d]+)/' . $this->rest_base . '/(?P<id>[\d]+)',
 			array(
 				'args'   => array(