diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index cae7a921784..b3bff2c7617 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -445,7 +445,7 @@ jobs:
           # Test causes a heap-buffer-overflow but I cannot reproduce it locally...
           php -r '$c = file_get_contents("src/Symfony/Component/HtmlSanitizer/Tests/HtmlSanitizerCustomTest.php"); $c = str_replace("public function testSanitizeDeepNestedString()", "/** @group skip */\n    public function testSanitizeDeepNestedString()", $c); file_put_contents("src/Symfony/Component/HtmlSanitizer/Tests/HtmlSanitizerCustomTest.php", $c);'
           # Buggy FFI test in Symfony, see https://github.com/symfony/symfony/issues/47668
-          php -r '$c = file_get_contents("src/Symfony/Component/VarDumper/Tests/Caster/FFICasterTest.php"); $c = str_replace("*/\n    public function testCastNonTrailingCharPointer()", "* @group skip\n     */\n    public function testCastNonTrailingCharPointer()", $c); file_put_contents("src/Symfony/Component/VarDumper/Tests/Caster/FFICasterTest.php", $c);'
+          php -r '$c = file_get_contents("src/Symfony/Component/VarDumper/Tests/Caster/FFICasterTest.php"); $c = str_replace("public function testCastNonTrailingCharPointer()", "/** @group skip */\n    public function testCastNonTrailingCharPointer()", $c); file_put_contents("src/Symfony/Component/VarDumper/Tests/Caster/FFICasterTest.php", $c);'
           export ASAN_OPTIONS=exitcode=139
           export SYMFONY_DEPRECATIONS_HELPER=max[total]=999
           X=0