diff --git a/sys/dev/usb/usb_msctest.c b/sys/dev/usb/usb_msctest.c
index 69473cb5c76c..d488196b1606 100644
--- a/sys/dev/usb/usb_msctest.c
+++ b/sys/dev/usb/usb_msctest.c
@@ -98,7 +98,6 @@ static uint8_t scsi_huawei_eject[] =	{ 0x11, 0x06, 0x00, 0x00, 0x00, 0x00,
 					  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 					  0x00, 0x00, 0x00, 0x00 };
 static uint8_t scsi_tct_eject[] =	{ 0x06, 0xf5, 0x04, 0x02, 0x52, 0x70 };
-static uint8_t scsi_tct_dummy[4];
 
 #define	BULK_SIZE		64	/* dummy */
 #define	ERR_CSW_FAILED		-1
@@ -621,8 +620,12 @@ usb_msc_eject(struct usb_device *udev, uint8_t iface_index, int method)
 		    USB_MS_HZ);
 		break;
 	case MSC_EJECT_TCT:
-		err = bbb_command_start(sc, DIR_IN, 0, &scsi_tct_dummy,
-		    sizeof(scsi_tct_dummy), &scsi_tct_eject,
+		/*
+		 * TCTMobile needs DIR_IN flag. To get it, we
+		 * supply a dummy data with the command.
+		 */
+		err = bbb_command_start(sc, DIR_IN, 0, &sc->buffer,
+		    sizeof(sc->buffer), &scsi_tct_eject,
 		    sizeof(scsi_tct_eject), USB_MS_HZ);
 		break;
 	default: