diff --git a/tests/phpunit/tests/functions/encodeQueryArgEndingPeriod.php b/tests/phpunit/tests/functions/encodeQueryArgEndingPeriod.php
index 7b2e5c0da3bf4..aecd105b1b3b3 100644
--- a/tests/phpunit/tests/functions/encodeQueryArgEndingPeriod.php
+++ b/tests/phpunit/tests/functions/encodeQueryArgEndingPeriod.php
@@ -6,7 +6,7 @@
  * @group  functions.php
  * @covers ::_encode_query_arg_ending_period
  */
-class Tests_Functions_WpUrlEncodeEndingPeriod extends WP_UnitTestCase {
+class Tests_Functions__EncodeQueryArgEndingPeriod extends WP_UnitTestCase {
 
 	/**
 	 * @dataProvider data__encode_query_arg_ending_period