diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c
index b3f0d0d..b55cc5c 100644
--- a/drivers/pwm/pwm-lpc32xx.c
+++ b/drivers/pwm/pwm-lpc32xx.c
@@ -145,7 +145,7 @@
 	return pwmchip_remove(&lpc32xx->chip);
 }
 
-static struct of_device_id lpc32xx_pwm_dt_ids[] = {
+static const struct of_device_id lpc32xx_pwm_dt_ids[] = {
 	{ .compatible = "nxp,lpc3220-pwm", },
 	{ /* sentinel */ }
 };