diff --git a/wp-includes/category-template.php b/wp-includes/category-template.php
index 971434baf2..e452ccda25 100644
--- a/wp-includes/category-template.php
+++ b/wp-includes/category-template.php
@@ -550,11 +550,11 @@ function wp_list_categories( $args = '' ) {
 		$exclude_tree = array();
 
 		if ( $r['exclude_tree'] ) {
-			$exclude_tree = array_merge( $exclude_tree, (array) $r['exclude_tree'] );
+			$exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $r['exclude_tree'] ) );
 		}
 
 		if ( $r['exclude'] ) {
-			$exclude_tree = array_merge( $exclude_tree, (array) $r['exclude'] );
+			$exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $r['exclude'] ) );
 		}
 
 		$r['exclude_tree'] = $exclude_tree;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index ae91c7fda0..814ec71afc 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36003';
+$wp_version = '4.5-alpha-36005';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.