diff --git a/src/sunstone/models/OpenNebulaJSON/VirtualMachineJSON.rb b/src/sunstone/models/OpenNebulaJSON/VirtualMachineJSON.rb
index 13e8cf6bf4..afe96dc5ad 100644
--- a/src/sunstone/models/OpenNebulaJSON/VirtualMachineJSON.rb
+++ b/src/sunstone/models/OpenNebulaJSON/VirtualMachineJSON.rb
@@ -211,7 +211,7 @@ module OpenNebulaJSON
 
             vm_new.extend(VirtualMachineExt)
 
-            vm_new.save_as_template(params['name'],params['description'], persistent => params['persistent'])
+            vm_new.save_as_template(params['name'],params['description'], :persistent => params['persistent'])
         end
     end
 end