diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 162535e7c94d..cdf6b01d1956 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1085,7 +1085,7 @@ static int stm32_pconf_parse_conf(struct pinctrl_dev *pctldev,
 		ret = stm32_pmx_gpio_set_direction(pctldev, range, pin, false);
 		break;
 	default:
-		ret = -EINVAL;
+		ret = -ENOTSUPP;
 	}
 
 	return ret;