Wrong key mapping in X

[Marcelo Magno T. Sales]

Hello,

Since I upgraded to Maverick, when I press "'" followed by "c" I get a 
"ć" instead of a "ç" as I did in previous versions.
How do I get the old behavior back? "ć" is not part of my alphabet, I 
need a "ç".

Thanks,

Marcelo