silly kernel taint question

Dear Kernel list,

sorry for the stupid question but:

My kernel module contains the line,

MODULE_LICENSE("GPL");

and when I insmod it I get
Installing device driver
Warning: loading pi_stage.o will taint the kernel: forced load

kernel 2.4.18-3

( if I miss out the MODULE_LICENSE("GPL"); I get a different error
Installing device driver
Warning: loading pi_stage.o will taint the kernel: no license
Warning: loading pi_stage.o will taint the kernel: forced load)

Any suggestions?

Thanks SA

you're using insmod -f