diff --git a/tests/qunit/wp-admin/js/password-strength-meter.js b/tests/qunit/wp-admin/js/password-strength-meter.js
index 9c232600d3..ce031ce4a3 100644
--- a/tests/qunit/wp-admin/js/password-strength-meter.js
+++ b/tests/qunit/wp-admin/js/password-strength-meter.js
@@ -95,7 +95,7 @@ jQuery( function() {
 	QUnit.test( 'user input disallowed list array should contain expected words', function( assert ) {
 		var disallowedList = wp.passwordStrength.userInputDisallowedList();
 
-		assert.ok( jQuery.isArray( disallowedList ), 'disallowed list is an array' );
+		assert.ok( Array.isArray( disallowedList ), 'disallowed list is an array' );
 		assert.ok( jQuery.inArray( 'WordPress', disallowedList ) > -1, 'disallowed list contains "WordPress" from page title' );
 		assert.ok( jQuery.inArray( 'tests', disallowedList ) > -1, 'disallowed list contains "tests" from site URL' );
 	});