diff --git a/libc/kernel/uapi/linux/sed-opal.h b/libc/kernel/uapi/linux/sed-opal.h
index f7ac9bd..4c66231 100644
--- a/libc/kernel/uapi/linux/sed-opal.h
+++ b/libc/kernel/uapi/linux/sed-opal.h
@@ -46,6 +46,9 @@
   OPAL_RW = 0x02,
   OPAL_LK = 0x04,
 };
+enum opal_lock_flags {
+  OPAL_SAVE_FOR_LOCK = 0x01,
+};
 struct opal_key {
   __u8 lr;
   __u8 key_len;
@@ -74,7 +77,8 @@
 struct opal_lock_unlock {
   struct opal_session_info session;
   __u32 l_state;
-  __u8 __align[4];
+  __u16 flags;
+  __u8 __align[2];
 };
 struct opal_new_pw {
   struct opal_session_info session;