diff --git a/tests/Builder/BuilderEncoderTest.php b/tests/Builder/BuilderEncoderTest.php
index 9759ad2..5593115 100644
--- a/tests/Builder/BuilderEncoderTest.php
+++ b/tests/Builder/BuilderEncoderTest.php
@@ -209,15 +209,12 @@ public function testSetWindowFields(): void
 
     public function testUnionWith(): void
     {
-        $unionWith = Stage::unionWith(...);
-        $match = Stage::match(...);
-        $project = Stage::project(...);
         $pipeline = new Pipeline(
-            $unionWith(
+            Stage::unionWith(
                 coll: 'orders',
                 pipeline: new Pipeline(
-                    $match(status: 'A'),
-                    $project(
+                    Stage::match(status: 'A'),
+                    Stage::project(
                         item: 1,
                         status: 1,
                     ),