diff --git a/drivers/mfd/twl6040.c b/drivers/mfd/twl6040.c
index 51b6df1a7949..75316fb33448 100644
--- a/drivers/mfd/twl6040.c
+++ b/drivers/mfd/twl6040.c
@@ -86,7 +86,7 @@ static struct reg_default twl6040_defaults[] = {
 	{ 0x2E, 0x00 }, /* REG_STATUS	(ro) */
 };
 
-struct reg_default twl6040_patch[] = {
+static struct reg_default twl6040_patch[] = {
 	/* Select I2C bus access to dual access registers */
 	{ TWL6040_REG_ACCCTL, 0x09 },
 };