Including libs inside other libs

Hi again, i'm trying to include the library "Servo.h" in one of my libraries, but the compilation fail with:

lib/targets/libraries/ServoController/ServoController.h:12:19: Servo.h: No such file or directory

How can i include it? (the best way)

thanks!

my solution right now is including Servo.h both in my library and my sketch. that way, it'll compile