diff --git a/sys/dev/ahci/ahci.c b/sys/dev/ahci/ahci.c
index 8e692bd4348..d03c8af4e8c 100644
--- a/sys/dev/ahci/ahci.c
+++ b/sys/dev/ahci/ahci.c
@@ -2903,7 +2903,7 @@ ahciaction(struct cam_sim *sim, union ccb *ccb)
 		if (ch->caps & AHCI_CAP_SPM)
 			cpi->hba_inquiry |= PI_SATAPM;
 		cpi->target_sprt = 0;
-		cpi->hba_misc = PIM_SEQSCAN;
+		cpi->hba_misc = PIM_SEQSCAN | PIM_UNMAPPED;
 		cpi->hba_eng_cnt = 0;
 		if (ch->caps & AHCI_CAP_SPM)
 			cpi->max_target = 15;
diff --git a/sys/dev/siis/siis.c b/sys/dev/siis/siis.c
index fb8866478a1..f892cc215ee 100644
--- a/sys/dev/siis/siis.c
+++ b/sys/dev/siis/siis.c
@@ -1939,7 +1939,7 @@ siisaction(struct cam_sim *sim, union ccb *ccb)
 		cpi->hba_inquiry = PI_SDTR_ABLE | PI_TAG_ABLE;
 		cpi->hba_inquiry |= PI_SATAPM;
 		cpi->target_sprt = 0;
-		cpi->hba_misc = PIM_SEQSCAN;
+		cpi->hba_misc = PIM_SEQSCAN | PIM_UNMAPPED;
 		cpi->hba_eng_cnt = 0;
 		cpi->max_target = 15;
 		cpi->max_lun = 0;