diff --git a/tests/phpunit/tests/widgets/text-widget.php b/tests/phpunit/tests/widgets/text-widget.php
index c50cf31e68..c84b24bef4 100644
--- a/tests/phpunit/tests/widgets/text-widget.php
+++ b/tests/phpunit/tests/widgets/text-widget.php
@@ -29,14 +29,16 @@ class Test_WP_Widget_Text extends WP_UnitTestCase {
 	/**
 	 * Clean up global scope.
 	 *
-	 * @global WP_Scripts $wp_scripts
-	 * @global WP_Styles  $wp_style
+	 * @global WP_Scripts           $wp_scripts
+	 * @global WP_Styles            $wp_style
+	 * @global WP_Customize_Manager $wp_customize
 	 */
 	function clean_up_global_scope() {
-		global $wp_scripts, $wp_styles;
+		global $wp_scripts, $wp_styles, $wp_customize;
 		parent::clean_up_global_scope();
-		$wp_scripts = null;
-		$wp_styles  = null;
+		$wp_scripts   = null;
+		$wp_styles    = null;
+		$wp_customize = null;
 	}
 
 	/**