--- a/samplicate.c +++ b/samplicate.c @@ -560,7 +560,7 @@ samplicate (ctx) } if (len != sizeof remote_address) { - fprintf (stderr, "recvfrom() return address length %d - expected %d\n", + fprintf (stderr, "recvfrom() return address length %d - expected %zu\n", len, sizeof remote_address); exit (1); }