diff --git a/samples/Compute/v2/volume_attachments/delete.php b/samples/Compute/v2/volume_attachments/delete.php
index 2bb66b3a..482152a1 100644
--- a/samples/Compute/v2/volume_attachments/delete.php
+++ b/samples/Compute/v2/volume_attachments/delete.php
@@ -16,6 +16,6 @@
 ]);
 
 $compute = $openstack->computeV2();
-$server = $compute->getServer();
+$server = $compute->getServer(['id' => '{serverId}']);
 
 $server->detachVolume('{volumeId}');