diff --git a/drivers/pinctrl/mediatek/pinctrl-moore.c b/drivers/pinctrl/mediatek/pinctrl-moore.c
index 70f608347a5f..8039b6dc39cd 100644
--- a/drivers/pinctrl/mediatek/pinctrl-moore.c
+++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
@@ -402,7 +402,8 @@ static int mtk_pinconf_group_get(struct pinctrl_dev *pctldev,
 				 unsigned int group, unsigned long *config)
 {
 	const unsigned int *pins;
-	unsigned int i, npins, old = 0;
+	unsigned int i, npins;
+	unsigned long old = 0;
 	int ret;
 
 	ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);