diff --git a/app/models/vm_or_template/operations/configuration.rb b/app/models/vm_or_template/operations/configuration.rb
index 3c33bdd58d9..df3ed696ff3 100644
--- a/app/models/vm_or_template/operations/configuration.rb
+++ b/app/models/vm_or_template/operations/configuration.rb
@@ -92,7 +92,7 @@ def add_disk(disk_name, disk_size_mb, options = {})
 
   def raw_attach_volume(volume_id, device = nil)
     raise _("VM has no EMS, unable to attach volume") unless ext_management_system
-    run_command_via_parent(:vm_attach_volume, :volume_id, :device)
+    run_command_via_parent(:vm_attach_volume, :volume_id => volume_id, :device => device)
   end
 
   def attach_volume(volume_id, device = nil)
@@ -101,7 +101,7 @@ def attach_volume(volume_id, device = nil)
 
   def raw_detach_volume(volume_id)
     raise _("VM has no EMS, unable to detach volume") unless ext_management_system
-    run_command_via_parent(:vm_detach_volume, :volume_id)
+    run_command_via_parent(:vm_detach_volume, :volume_id => volume_id)
   end
 
   def detach_volume(volume_id, device = nil)