vRAM licensing capacity alert

Hi

I'm having this alert in vCenter saying "License capacity monitoring"  that won't go away.

When I check the Licensing report it shows that my Purchased capacity is 0.02GB vRAM?

We are running both vCenter and ESXi 5.0 U2.

As far as I know, vmware removed the vRAM license in both 5.0 and 5.1, but why I am getting this alert?

I have no trouble powering on VM's.