diff --git a/include/regs.h b/include/regs.h
index e97f54a1..92eb004a 100644
--- a/include/regs.h
+++ b/include/regs.h
@@ -35,9 +35,11 @@
 #define FLAG_IOPL	0x00003000
 #define FLAG_NT		0x00004000
 #define FLAG_VM		0x00020000
+#define FLAG_AC		0x00040000
+#define FLAG_ID		0x00200000
 
 #define FMASK_TEST		(FLAG_CF | FLAG_PF | FLAG_AF | FLAG_ZF | FLAG_SF | FLAG_OF)
-#define FMASK_NORMAL	(FMASK_TEST | FLAG_DF | FLAG_TF | FLAG_IF)	
+#define FMASK_NORMAL	(FMASK_TEST | FLAG_DF | FLAG_TF | FLAG_IF | FLAG_AC )	
 #define FMASK_ALL		(FMASK_NORMAL | FLAG_IOPL | FLAG_NT)
 
 #define SETFLAGBIT(TYPE,TEST) if (TEST) reg_flags|=FLAG_ ## TYPE; else reg_flags&=~FLAG_ ## TYPE