diff --git a/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb b/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb
index 6661dbd42c..e816435dcb 100644
--- a/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb
+++ b/src/vmm_mad/remotes/lib/vcenter_driver/virtual_machine.rb
@@ -82,13 +82,13 @@ class VirtualMachine < VCenterDriver::Template
         end
 
         def id
-            raise_if_no_one
+            raise_if_no_exists_in_one
 
             @id
         end
 
         def one_item
-            raise_if_no_one
+            raise_if_no_exists_in_one
 
             @one_res
         end
@@ -138,7 +138,7 @@ class VirtualMachine < VCenterDriver::Template
         end
 
         def managed?
-            raise_if_no_one
+            raise_if_no_exists_in_one
             if @one_res
                 !(@one_res['OPENNEBULA_MANAGED'] &&
                   @one_res['OPENNEBULA_MANAGED'].downcase == "no")
@@ -199,7 +199,7 @@ class VirtualMachine < VCenterDriver::Template
 
 
         def storpod?
-           raise_if_no_one
+           raise_if_no_exists_in_one
            @one_res["VCENTER_DS_REF"].start_with?('group-')
         end
 
@@ -228,7 +228,7 @@ class VirtualMachine < VCenterDriver::Template
         end
 
         def image_ds_ref
-            raise_if_no_one
+            raise_if_no_exists_in_one
 
             @one_res['VCENTER_DS_REF']
         end
@@ -284,19 +284,19 @@ class VirtualMachine < VCenterDriver::Template
         end
 
         def persistent?
-            raise_if_no_one
+            raise_if_no_exists_in_one
 
             @one_res['PERSISTENT'] == 'YES'
         end
 
         def volatile?
-            raise_if_no_one
+            raise_if_no_exists_in_one
 
             @one_res["TYPE"] && @one_res["TYPE"].downcase == "fs"
         end
 
         def cloned?
-            raise_if_no_one
+            raise_if_no_exists_in_one
 
             @one_res['SOURCE'] != @vc_res[:path_wo_ds]
         end