diff --git a/drivers/mfd/da9150-core.c b/drivers/mfd/da9150-core.c
index 4d757b97ef9a076fd4e433dff135c69b6adefe05..5549817df32e7954776a8e2334d44196bd785e6e 100644
--- a/drivers/mfd/da9150-core.c
+++ b/drivers/mfd/da9150-core.c
@@ -95,7 +95,7 @@ static const struct regmap_range_cfg da9150_range_cfg[] = {
 	},
 };
 
-static struct regmap_config da9150_regmap_config = {
+static const struct regmap_config da9150_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.ranges = da9150_range_cfg,