diff --git a/pkg/scsi/cmd.go b/pkg/scsi/cmd.go
index 551e832..1ad4d4c 100644
--- a/pkg/scsi/cmd.go
+++ b/pkg/scsi/cmd.go
@@ -164,8 +164,8 @@ const (
 	INQUIRY_SCCS          = byte(0x80)
 	INQUIRY_AAC           = byte(0x40)
 	INQUIRY_TPGS_NO       = byte(0x00)
-	INQUIRY_TPGS_IMPLICIT = byte(0x20)
-	INQUIRY_TPGS_EXPLICIT = byte(0x10)
+	INQUIRY_TPGS_IMPLICIT = byte(0x10)
+	INQUIRY_TPGS_EXPLICIT = byte(0x20)
 	INQUIRY_TPGS_BOTH     = byte(0x30)
 	INQUIRY_3PC           = byte(0x08)
 	INQUIRY_Reserved      = byte(0x06)