diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
index b921144684..85c8f22e8b 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
@@ -1159,14 +1159,12 @@ class WP_REST_Comments_Controller extends WP_REST_Controller {
 		}
 
 		if ( 0 !== (int) $comment->comment_post_ID ) {
-			$post = get_post( $comment->comment_post_ID );
-
-			if ( ! empty( $post->ID ) ) {
-				$obj  = get_post_type_object( $post->post_type );
-				$base = ! empty( $obj->rest_base ) ? $obj->rest_base : $obj->name;
+			$post       = get_post( $comment->comment_post_ID );
+			$post_route = rest_get_route_for_post( $post );
 
+			if ( ! empty( $post->ID ) && $post_route ) {
 				$links['up'] = array(
-					'href'       => rest_url( 'wp/v2/' . $base . '/' . $comment->comment_post_ID ),
+					'href'       => rest_url( $post_route ),
 					'embeddable' => true,
 					'post_type'  => $post->post_type,
 				);
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b67f01afd5..63982a4090 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-beta1-49298';
+$wp_version = '5.6-beta1-49299';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.