diff --git a/tests/Type/Nette/ComponentModelDynamicReturnTypeExtensionTest.php b/tests/Type/Nette/ComponentModelDynamicReturnTypeExtensionTest.php
index fad246f..5fc7bc4 100644
--- a/tests/Type/Nette/ComponentModelDynamicReturnTypeExtensionTest.php
+++ b/tests/Type/Nette/ComponentModelDynamicReturnTypeExtensionTest.php
@@ -12,7 +12,7 @@ class ComponentModelDynamicReturnTypeExtensionTest extends TypeInferenceTestCase
 	 */
 	public function dataFileAsserts(): iterable
 	{
-		yield from $this->gatherAssertTypes(__DIR__ . '/data/componentModel.php');
+		yield from self::gatherAssertTypes(__DIR__ . '/data/componentModel.php');
 	}
 
 	/**