diff --git a/tests/phpunit/tests/pluggable.php b/tests/phpunit/tests/pluggable.php
index 1e8872d132..281e572016 100644
--- a/tests/phpunit/tests/pluggable.php
+++ b/tests/phpunit/tests/pluggable.php
@@ -179,6 +179,7 @@ class Tests_Pluggable extends WP_UnitTestCase {
 			'wp_cache_switch_to_blog'            => array( 'blog_id' ),
 			'wp_cache_add_global_groups'         => array( 'groups' ),
 			'wp_cache_add_non_persistent_groups' => array( 'groups' ),
+			'wp_cache_reset'                     => array(),
 
 			// wp-admin/includes/schema.php:
 			'install_network'                    => array(),