"There are no sql server instances or shared features that can be updated on this computer" when updating SQL Server 2012 from SP1 to SP2

I have:

Microsoft SQL Server 2012 - 11.0.5343.0 (X64) 
May  4 2015 19:11:32 
Copyright (c) Microsoft Corporation
Developer Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)

And I need to update to SP2 (SQLServer2012SP2-KB2958429-x64-ENU.exe), but I'm getting the following error: