[Exchange 2013] Update to CU3

Hello,

I have something very strange with my CU3.
I download the “Exchange2013-x64-cu3.exe” and when I launch the setup in GUI I see correctly “Welcome … Exchange Server 2013 CU3 …”

When I launch in powershell for update the schema I have :
Welcome to the unattended Setup of Microsoft Exchange Server 2013 with Cumulative Update 2

After the update of schema the version of schema is always the same : “15281 (CU2)” and not 15283 (CU3)

Is it normal ?

Thank’s very much.

Stéphane.