diff --git a/tests/phpunit/tests/functions/wpUniquePrefixedId.php b/tests/phpunit/tests/functions/wpUniquePrefixedId.php
index 64a6a955a1..ed6e489a3e 100644
--- a/tests/phpunit/tests/functions/wpUniquePrefixedId.php
+++ b/tests/phpunit/tests/functions/wpUniquePrefixedId.php
@@ -7,7 +7,7 @@
  *
  * @since 6.4.0
  *
- * @group functions.php
+ * @group functions
  * @covers ::wp_unique_prefixed_id
  */
 class Tests_Functions_WpUniquePrefixedId extends WP_UnitTestCase {