diff --git a/sound/soc/codecs/ak4641.h b/sound/soc/codecs/ak4641.h
index 38b9e93e97a4..e00af5c62160 100644
--- a/sound/soc/codecs/ak4641.h
+++ b/sound/soc/codecs/ak4641.h
@@ -36,6 +36,4 @@
 #define AK4641_EQHI		0x12
 #define AK4641_BTIF		0x13
 
-#define AK4641_CACHEREGNUM	0x14
-
 #endif