diff --git a/Tests/Caster/ExceptionCasterTest.php b/Tests/Caster/ExceptionCasterTest.php
index 7de30f4f..73545701 100644
--- a/Tests/Caster/ExceptionCasterTest.php
+++ b/Tests/Caster/ExceptionCasterTest.php
@@ -251,8 +251,8 @@ public function testExcludeVerbosity()
 
     public function testAnonymous()
     {
-        $e = new \Exception(sprintf('Boo "%s" ba.', \get_class(new class('Foo') extends \Exception {
-        })));
+        $e = new \Exception(sprintf('Boo "%s" ba.', (new class('Foo') extends \Exception {
+        })::class));
 
         $expectedDump = <<<'EODUMP'
 Exception {
diff --git a/Tests/Caster/StubCasterTest.php b/Tests/Caster/StubCasterTest.php
index cd6876cd..6ca2dad3 100644
--- a/Tests/Caster/StubCasterTest.php
+++ b/Tests/Caster/StubCasterTest.php
@@ -192,8 +192,8 @@ public function testClassStubWithNotExistingMethod()
 
     public function testClassStubWithAnonymousClass()
     {
-        $var = [new ClassStub(\get_class(new class() extends \Exception {
-        }))];
+        $var = [new ClassStub((new class() extends \Exception {
+        })::class)];
 
         $cloner = new VarCloner();
         $dumper = new HtmlDumper();