diff --git a/drivers/thermal/thermal_mmio.c b/drivers/thermal/thermal_mmio.c
index ded1dd0d4ef7..360b0dfdc3b0 100644
--- a/drivers/thermal/thermal_mmio.c
+++ b/drivers/thermal/thermal_mmio.c
@@ -34,7 +34,7 @@ static int thermal_mmio_get_temperature(void *private, int *temp)
 	return 0;
 }
 
-static struct thermal_zone_of_device_ops thermal_mmio_ops = {
+static const struct thermal_zone_of_device_ops thermal_mmio_ops = {
 	.get_temp = thermal_mmio_get_temperature,
 };