diff --git a/include/scsi-lowlevel.h b/include/scsi-lowlevel.h
index 44bf80a..b924cf5 100644
--- a/include/scsi-lowlevel.h
+++ b/include/scsi-lowlevel.h
@@ -1081,8 +1081,10 @@ EXTERN struct scsi_task *scsi_cdb_writeverify16(uint64_t lba, uint32_t xferlen,
 
 void *scsi_malloc(struct scsi_task *task, size_t size);
 
+uint64_t scsi_get_uint64(const unsigned char *c);
 uint32_t scsi_get_uint32(const unsigned char *c);
 uint16_t scsi_get_uint16(const unsigned char *c);
+void scsi_set_uint64(unsigned char *c, uint64_t val);
 void scsi_set_uint32(unsigned char *c, uint32_t val);
 void scsi_set_uint16(unsigned char *c, uint16_t val);