diff --git a/drivers/pinctrl/stm32/pinctrl-stm32-hdp.c b/drivers/pinctrl/stm32/pinctrl-stm32-hdp.c
index dea49b9aabf2..a8a4c2eee837 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32-hdp.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32-hdp.c
@@ -576,7 +576,7 @@ static const struct pinmux_ops stm32_hdp_pinmux_ops = {
 	.gpio_set_direction  = NULL,
 };
 
-static struct pinctrl_desc stm32_hdp_pdesc = {
+static const struct pinctrl_desc stm32_hdp_pdesc = {
 	.name	 = DRIVER_NAME,
 	.pins	 = stm32_hdp_pins,
 	.npins	 = ARRAY_SIZE(stm32_hdp_pins),