diff --git a/drivers/pinctrl/pinctrl-sx150x.c b/drivers/pinctrl/pinctrl-sx150x.c
index 7450f511844569d32b0bda6cefa3423a1cbb5eba..c5ab8cef942d68dc99249db9e29d28d7c84eaffc 100644
--- a/drivers/pinctrl/pinctrl-sx150x.c
+++ b/drivers/pinctrl/pinctrl-sx150x.c
@@ -1087,7 +1087,7 @@ static bool sx150x_reg_volatile(struct device *dev, unsigned int reg)
 	return reg == pctl->data->reg_irq_src || reg == pctl->data->reg_data;
 }
 
-const struct regmap_config sx150x_regmap_config = {
+static const struct regmap_config sx150x_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 32,