diff --git a/rules-tests/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector/Fixture/skip_anonymous_class.php.inc b/rules-tests/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector/Fixture/skip_anonymous_class.php.inc
new file mode 100644
index 00000000000..708e2a94a70
--- /dev/null
+++ b/rules-tests/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector/Fixture/skip_anonymous_class.php.inc
@@ -0,0 +1,10 @@
+<?php
+
+namespace Rector\Tests\Php74\Rector\Property\RestoreDefaultNullToNullableTypePropertyRector\Fixture;
+
+function someFactory()
+{
+    return new class {
+        public ?string $name;
+    };
+}
diff --git a/rules/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector.php b/rules/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector.php
index 83f86675b13..3db71087cda 100644
--- a/rules/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector.php
+++ b/rules/Php74/Rector/Property/RestoreDefaultNullToNullableTypePropertyRector.php
@@ -64,6 +64,10 @@ public function getNodeTypes(): array
      */
     public function refactor(Node $node): ?Node
     {
+        if ($node->isAnonymous()) {
+            return null;
+        }
+
         if ($this->isReadonlyClass($node)) {
             return null;
         }