How Saving Throws progression work on Prestige Classes? D&D 3.5

I’ll try to picture as best as possible.

I have a Wizard 3 and Master Specialist 1.

As a Wizard I have the following saves:

+1 +1 +3

as Master Specialist on 1st level I get:

0 0 +2

So I simply add the +2 to the Will Save?

It seems like “cheating”, as a normal Wizard would have 2 points less on saving throws by level 5.