diff --git a/include/ntapi/nt_process.h b/include/ntapi/nt_process.h
index 58e0445..62f0a4d 100644
--- a/include/ntapi/nt_process.h
+++ b/include/ntapi/nt_process.h
@@ -576,6 +576,9 @@ typedef struct _nt_runtime_data {
 	uint32_t	flags;
 	uint32_t	reserved;
 
+	int32_t		umask;
+	int32_t		amask;
+
 	void *		hstdin;
 	void *		hstdout;
 	void *		hstderr;