diff --git a/core/modules/system/tests/modules/theme_test/templates/theme-test-foo.html.twig b/core/modules/system/tests/modules/theme_test/templates/theme-test-foo.html.twig
index fef9a26..4f13c91 100644
--- a/core/modules/system/tests/modules/theme_test/templates/theme-test-foo.html.twig
+++ b/core/modules/system/tests/modules/theme_test/templates/theme-test-foo.html.twig
@@ -9,4 +9,4 @@
  * @ingroup themeable
  */
 #}
-{{ foo }}{# Comment removes trailing newline #}
+{{ foo }}