diff --git a/wp-includes/class-wp-xmlrpc-server.php b/wp-includes/class-wp-xmlrpc-server.php
index 9da0e1f9a1..2a1815e5aa 100644
--- a/wp-includes/class-wp-xmlrpc-server.php
+++ b/wp-includes/class-wp-xmlrpc-server.php
@@ -5457,8 +5457,8 @@ class wp_xmlrpc_server extends IXR_Server {
 
 		$post_author = $user->ID;
 
-		// If an author id was provided then use it instead.
-		if ( isset( $content_struct['wp_author_id'] ) && ( $user->ID != $content_struct['wp_author_id'] ) ) {
+		// If an author ID was provided then use it instead.
+		if ( isset( $content_struct['wp_author_id'] ) && ( $user->ID !== (int) $content_struct['wp_author_id'] ) ) {
 			switch ( $post_type ) {
 				case 'post':
 					if ( ! current_user_can( 'edit_others_posts' ) ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d94c43f1d5..c467677307 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.8-alpha-59712';
+$wp_version = '6.8-alpha-59713';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.