diff --git a/include/scsi-lowlevel.h b/include/scsi-lowlevel.h
index beca19d..0f6830b 100644
--- a/include/scsi-lowlevel.h
+++ b/include/scsi-lowlevel.h
@@ -208,7 +208,6 @@ struct scsi_iovector {
 	struct scsi_iovec *iov;
 	int niov;
 	int nalloc;
-	size_t size;
 	size_t offset;
 	int consumed;
 };
diff --git a/lib/scsi-lowlevel.c b/lib/scsi-lowlevel.c
index 0f2e5f3..eeb0375 100644
--- a/lib/scsi-lowlevel.c
+++ b/lib/scsi-lowlevel.c
@@ -2589,7 +2589,6 @@ scsi_iovector_add(struct scsi_task *task, struct scsi_iovector *iovector, int le
 	iovector->iov[iovector->niov].iov_len = len;
 	iovector->iov[iovector->niov].iov_base = buf;
 	iovector->niov++;
-	iovector->size += len;
 
 	return 0;
 }