Fixes the compilation error in distort2.c file. Use like this: shell$ patch -d gnuitar-0.3.1 -p1 r2 = 510; ap->r1 = 1; ap->lowpass = 350; - ap->noisegate = 6000; + ap->noisegate = 3000; RC_setup(10, 1.5, &(ap->fd)); RC_set_freq(ap->lowpass, &(ap->fd));