diff --git a/include/ntapi/nt_tty.h b/include/ntapi/nt_tty.h
index 403f79d..9be8e8e 100644
--- a/include/ntapi/nt_tty.h
+++ b/include/ntapi/nt_tty.h
@@ -69,6 +69,9 @@ typedef enum _nt_tty_opcode {
 	NT_TTY_QUERY_INFORMATION_SEMAPHORE,
 	NT_TTY_QUERY_INFORMATION_MSGQUEUE,
 	NT_TTY_QUERY_INFORMATION_AFLOCK,
+	/* session log */
+	NT_TTY_LOG_WRITE,
+	NT_TTY_LOG_QUERY,
 	/* peer daemon calls */
 	NT_TTY_REQUEST_PEER,
 	NT_TTY_SIGNAL_PEER,