diff --git a/src/tm_mad/vcenter/mv b/src/tm_mad/vcenter/mv
index 3b10d555e9..d9561aeabe 100755
--- a/src/tm_mad/vcenter/mv
+++ b/src/tm_mad/vcenter/mv
@@ -45,7 +45,7 @@ begin
     one_client = OpenNebula::Client.new
     vm = OpenNebula::VirtualMachine.new_with_id(vmid, one_client)
     vm.info
-    src_ds = vm.to_hash["VM"]["HISTORY_RECORDS"]["HISTORY"][-2]["DS_ID"]
+    src_ds = vm.retrieve_elements("HISTORY_RECORDS/HISTORY/DS_ID")[-2]
 
     if src_ds == dsid
         VCenterDriver::VirtualMachine.migrate_routine(vmid, host_orig,  host_dest)