- logger(DEBUG_ALWAYS, LOG_ERR, "Wrong CMSG data length: %zu, expected %zu!",
- cmsgptr->cmsg_len, CMSG_LEN(sizeof(device_fd)));
+ logger(DEBUG_ALWAYS, LOG_ERR, "Wrong CMSG data length: %lu, expected %lu!",
+ (unsigned long)cmsgptr->cmsg_len, (unsigned long)CMSG_LEN(sizeof(device_fd)));