diff --git a/wp-includes/class-wp-taxonomy.php b/wp-includes/class-wp-taxonomy.php
index 4611ce9744..3a69b76551 100644
--- a/wp-includes/class-wp-taxonomy.php
+++ b/wp-includes/class-wp-taxonomy.php
@@ -333,6 +333,8 @@ final class WP_Taxonomy {
 			}
 		}
 
+		$args['name'] = $this->name;
+
 		foreach ( $args as $property_name => $property_value ) {
 			$this->$property_name = $property_value;
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b86b23813e..128a62e54a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40048';
+$wp_version = '4.8-alpha-40049';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.