diff --git a/tests/Collection/BuilderCollectionFunctionalTest.php b/tests/Collection/BuilderCollectionFunctionalTest.php
index c974ac40d..1075c7aa8 100644
--- a/tests/Collection/BuilderCollectionFunctionalTest.php
+++ b/tests/Collection/BuilderCollectionFunctionalTest.php
@@ -8,8 +8,6 @@
 use MongoDB\Builder\Stage;
 use PHPUnit\Framework\Attributes\TestWith;
 
-use function iterator_to_array;
-
 class BuilderCollectionFunctionalTest extends FunctionalTestCase
 {
     public function setUp(): void
@@ -24,15 +22,15 @@ public function setUp(): void
     public function testAggregate(bool $pipelineAsArray): void
     {
         $this->collection->insertMany([['x' => 10], ['x' => 10], ['x' => 10]]);
-        $pipeline = new Pipeline(
+        $pipeline = [
             Stage::bucketAuto(
                 groupBy: Expression::intFieldPath('x'),
                 buckets: 2,
             ),
-        );
+        ];
 
-        if ($pipelineAsArray) {
-            $pipeline = iterator_to_array($pipeline);
+        if (! $pipelineAsArray) {
+            $pipeline = new Pipeline(...$pipeline);
         }
 
         $results = $this->collection->aggregate($pipeline)->toArray();
@@ -272,12 +270,12 @@ public function testWatch(bool $pipelineAsArray): void
             $this->markTestSkipped('Test does not apply on sharded clusters: need more than a single getMore call on the change stream.');
         }
 
-        $pipeline = new Pipeline(
+        $pipeline = [
             Stage::match(operationType: Query::eq('insert')),
-        );
+        ];
 
-        if ($pipelineAsArray) {
-            $pipeline = iterator_to_array($pipeline);
+        if (! $pipelineAsArray) {
+            $pipeline = new Pipeline(...$pipeline);
         }
 
         $changeStream = $this->collection->watch($pipeline);
diff --git a/tests/Database/BuilderDatabaseFunctionalTest.php b/tests/Database/BuilderDatabaseFunctionalTest.php
index 1df18dbb1..491d2ccc1 100644
--- a/tests/Database/BuilderDatabaseFunctionalTest.php
+++ b/tests/Database/BuilderDatabaseFunctionalTest.php
@@ -8,8 +8,6 @@
 use MongoDB\Builder\Stage;
 use PHPUnit\Framework\Attributes\TestWith;
 
-use function iterator_to_array;
-
 class BuilderDatabaseFunctionalTest extends FunctionalTestCase
 {
     public function tearDown(): void
@@ -25,7 +23,7 @@ public function testAggregate(bool $pipelineAsArray): void
     {
         $this->skipIfServerVersion('<', '6.0.0', '$documents stage is not supported');
 
-        $pipeline = new Pipeline(
+        $pipeline = [
             Stage::documents([
                 ['x' => 1],
                 ['x' => 2],
@@ -35,10 +33,10 @@ public function testAggregate(bool $pipelineAsArray): void
                 groupBy: Expression::intFieldPath('x'),
                 buckets: 2,
             ),
-        );
+        ];
 
-        if ($pipelineAsArray) {
-            $pipeline = iterator_to_array($pipeline);
+        if (! $pipelineAsArray) {
+            $pipeline = new Pipeline(...$pipeline);
         }
 
         $results = $this->database->aggregate($pipeline)->toArray();
@@ -55,12 +53,12 @@ public function testWatch(bool $pipelineAsArray): void
             $this->markTestSkipped('Test does not apply on sharded clusters: need more than a single getMore call on the change stream.');
         }
 
-        $pipeline = new Pipeline(
+        $pipeline = [
             Stage::match(operationType: Query::eq('insert')),
-        );
+        ];
 
-        if ($pipelineAsArray) {
-            $pipeline = iterator_to_array($pipeline);
+        if (! $pipelineAsArray) {
+            $pipeline = new Pipeline(...$pipeline);
         }
 
         $changeStream = $this->database->watch($pipeline);