diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 8c29f7b27324f4980e1b73f98b7186c10107120a..d42fbb667d8cf41db556ee3eb0d6f00e13ecc6bf 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -583,7 +583,7 @@ static bool lm3533_precious_register(struct device *dev, unsigned int reg)
 	}
 }
 
-static struct regmap_config regmap_config = {
+static const struct regmap_config regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
 	.max_register	= LM3533_REG_MAX,