diff --git a/drivers/block/scsi_ioctl.c b/drivers/block/scsi_ioctl.c
index abb2df2..856c227 100644
--- a/drivers/block/scsi_ioctl.c
+++ b/drivers/block/scsi_ioctl.c
@@ -123,6 +123,7 @@
 		safe_for_read(READ_12),
 		safe_for_read(READ_16),
 		safe_for_read(READ_BUFFER),
+		safe_for_read(READ_DEFECT_DATA),
 		safe_for_read(READ_LONG),
 		safe_for_read(INQUIRY),
 		safe_for_read(MODE_SENSE),