diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index 8b22fca..da1f901 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -140,6 +140,7 @@
 #define GEN_PMCON_1		0xa0
 #define GEN_PMCON_2		0xa2
 #define GEN_PMCON_3		0xa4
+#define GEN_PMCON_LOCK		0xa6
 #define ETR3			0xac
 #define  ETR3_CWORWRE		(1 << 18)
 #define  ETR3_CF9GR		(1 << 20)