diff --git a/src/arch/i386/include/registers.h b/src/arch/i386/include/registers.h
index 66653238..2b9b2b43 100644
--- a/src/arch/i386/include/registers.h
+++ b/src/arch/i386/include/registers.h
@@ -176,4 +176,12 @@ struct i386_all_regs {
 	uint32_t flags;
 } PACKED;
 
+/* Flags */
+#define CF ( 1 <<  0 )
+#define PF ( 1 <<  2 )
+#define AF ( 1 <<  4 )
+#define ZF ( 1 <<  6 )
+#define SF ( 1 <<  7 )
+#define OF ( 1 << 11 )
+
 #endif /* REGISTERS_H */