diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
index 946f08eafa..72e938cf83 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
@@ -2026,7 +2026,7 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 		}
 
 		if ( in_array( $post->post_type, array( 'post', 'page' ), true ) || post_type_supports( $post->post_type, 'revisions' ) ) {
-			$revision        = wp_get_lastest_revision_id_and_total_count( $post->ID );
+			$revision        = wp_get_last_revision_id_and_total_count( $post->ID );
 			$revisions_count = ! is_wp_error( $revision ) ? $revision['count'] : 0;
 
 			$links['version-history'] = array(
@@ -2035,7 +2035,8 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 			);
 
 			if ( $revisions_count > 0 ) {
-				$last_revision                = $revision['revision'];
+				$last_revision = $revision['revision'];
+
 				$links['predecessor-version'] = array(
 					'href' => rest_url( trailingslashit( $base ) . $post->ID . '/revisions/' . $last_revision ),
 					'id'   => $last_revision,
diff --git a/wp-includes/revision.php b/wp-includes/revision.php
index 5f203fb730..a039c706fe 100644
--- a/wp-includes/revision.php
+++ b/wp-includes/revision.php
@@ -528,27 +528,27 @@ function wp_get_post_revisions( $post = 0, $args = null ) {
 }
 
 /**
- * Get latest revision and count of revisions for a post.
+ * Returns the latest revision ID and count of revisions for a post.
  *
  * @since 6.1.0
  *
- * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global $post.
+ * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
  * @return WP_Error|array {
- *     Returns associative array with last revision and total count.
+ *     Returns associative array with last revision ID and total count.
  *
- *     @type int $revision The last revision post id or 0 if non existing.
- *     @type int $count The total count of revisions for $post_id.
+ *     @type int $revision The last revision post ID or 0 if no revisions exist.
+ *     @type int $count    The total count of revisions for the given post.
  * }
  */
-function wp_get_lastest_revision_id_and_total_count( $post = null ) {
+function wp_get_last_revision_id_and_total_count( $post = 0 ) {
 	$post = get_post( $post );
 
 	if ( ! $post ) {
-		return new WP_Error( 'revision_error', __( 'Invalid post.' ) );
+		return new WP_Error( 'invalid_post', __( 'Invalid post.' ) );
 	}
 
 	if ( ! wp_revisions_enabled( $post ) ) {
-		return new WP_Error( 'revision_error', __( 'Revisions not enabled.' ) );
+		return new WP_Error( 'revisions_not_enabled', __( 'Revisions not enabled.' ) );
 	}
 
 	$args = array(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3d3517c626..6321aef658 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-alpha-53768';
+$wp_version = '6.1-alpha-53769';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.