diff --git a/wp-includes/nav-menu.php b/wp-includes/nav-menu.php
index 60cce801cc..f5e7defb6f 100644
--- a/wp-includes/nav-menu.php
+++ b/wp-includes/nav-menu.php
@@ -109,7 +109,7 @@ function wp_delete_nav_menu( $menu ) {
 			wp_delete_post( $item );
 		}
 	}
-	wp_delete_term( $menu_id, 'nav_menu' );
+	wp_delete_term( $menu->term_id, 'nav_menu' );
 }
 
 /**
@@ -285,4 +285,4 @@ function wp_setup_nav_menu_item( $menu_item, $type = 'item', $position = 0 ) {
 
 	return $menu_item;
 }
-?>
\ No newline at end of file
+?>