diff --git a/tests/cases/integration/Collection/collection.embeddables.phpt b/tests/cases/integration/Collection/collection.embeddables.phpt
index 4af110d6..e53d8797 100644
--- a/tests/cases/integration/Collection/collection.embeddables.phpt
+++ b/tests/cases/integration/Collection/collection.embeddables.phpt
@@ -39,7 +39,7 @@ class CollectionEmbeddablesTest extends DataTestCase
 	}
 
 
-	public function testOrderBy()
+	public function testOrderBy(): void
 	{
 		$books = $this->orm->books->findAll()->orderBy('price->cents');
 		$bookIds = $books->fetchPairs(null, 'id');