diff --git a/tests/Fixtures/Scratch/CustomPropertyAttribute.php b/tests/Fixtures/Scratch/CustomPropertyAttribute.php
new file mode 100644
index 00000000..63e1c7fb
--- /dev/null
+++ b/tests/Fixtures/Scratch/CustomPropertyAttribute.php
@@ -0,0 +1,31 @@
+<?php declare(strict_types=1);
+
+/**
+ * @license Apache 2.0
+ */
+
+namespace OpenApi\Tests\Fixtures\Scratch;
+
+use OpenApi\Attributes as OAT;
+
+#[\Attribute(\Attribute::TARGET_METHOD | \Attribute::TARGET_PROPERTY | \Attribute::TARGET_PARAMETER | \Attribute::TARGET_CLASS_CONSTANT | \Attribute::IS_REPEATABLE)]
+final class CustomOpenApiProperty extends OAT\Property
+{
+}
+
+#[OAT\Info(title: 'Api', version: '1.0.0')]
+#[OAT\Get(path: '/api')]
+#[OAT\Response(response: 200, description: 'All good')]
+class Controller
+{
+}
+
+#[OAT\Schema]
+class CustomPropertyAttribute
+{
+    public function __construct(
+        #[CustomOpenApiProperty()]
+        public ?int $number,
+    ) {
+    }
+}
diff --git a/tests/Fixtures/Scratch/CustomPropertyAttribute.yaml b/tests/Fixtures/Scratch/CustomPropertyAttribute.yaml
new file mode 100644
index 00000000..a4e89c45
--- /dev/null
+++ b/tests/Fixtures/Scratch/CustomPropertyAttribute.yaml
@@ -0,0 +1,18 @@
+openapi: 3.0.0
+info:
+  title: Api
+  version: 1.0.0
+paths:
+  /api:
+    get:
+      responses:
+        '200':
+          description: 'All good'
+components:
+  schemas:
+    CustomPropertyAttribute:
+      properties:
+        number:
+          type: integer
+          nullable: true
+      type: object