diff --git a/test/php/gutenberg-coding-standards/Gutenberg/Tests/Commenting/SinceTagUnitTest.inc b/test/php/gutenberg-coding-standards/Gutenberg/Tests/Commenting/SinceTagUnitTest.inc
index 02f5e2b4154ad..aa8593b2e2757 100644
--- a/test/php/gutenberg-coding-standards/Gutenberg/Tests/Commenting/SinceTagUnitTest.inc
+++ b/test/php/gutenberg-coding-standards/Gutenberg/Tests/Commenting/SinceTagUnitTest.inc
@@ -625,3 +625,5 @@ $foo = new apply_filters_ref_array();
 $foo->apply_filters_ref_array();
 $foo = new apply_filters_deprecated();
 $foo->apply_filters_deprecated();
+$foo = new non_hook_action();
+$foo->non_hook_action();