How can I get asserts in my iOS framework to just print the filename instead of the entire path?

Question

Say the following assert is hit in my code:

NSAssert(NO, @"This assert should always be hit.");

At the top of the stack trace, the entire path to the file is printed:

Assertion failure in +[Foo barMethod:], /Users/foo/code/SomeFramework/SomeFolder/file.m:12

For privacy reasons, is there a simple way by which I can mute the path printed, or just have it print file.m:16 without affecting the quality of the stack trace?