iCal problem with updating address

I have 2 GMails synced with iCal, 1 is personal and 1 is for work. I used to have a different address for personal use but I've changed it to a new gmail account. Everything has changed normally except for one thing. When I create a mail alert for an event it shows me 2 emails: My current work mail with "(work)" written next to it, and my old mail with "(home)" next to it. Anywhere else in iCal everything works fine. I deleted that old mail from my accounts so how can I change this damn old mail to the new one?

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