System Keychain Has an Entry that can't be deleted

I'm trying to build my app with xcode and it's throwing a code sign error saying:

iPhone Distribution: jetheat: ambiguous (matches "iPhone Distribution: jetheat" in /Library/Keychains/System.keychain and "iPhone Distribution: jetheat" in /Users/Jet/Library/Keychains/login.keychain

Command /usr/bin/codesign failed with exit code 1

So it says that I have two distribution certificates in my keychain, which is true as i can see that in my keychain.

But when I try to delete the certificate within the system keychain, it just wont allow me to do it.

It says: An error occurred while deleting “iPhone Distribution: jetheat.” The specified i开发者_如何学运维tem could not be found in the keychain.

Any ideas what I can do?

Thanks,

JH