diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 467479f..0f0356c 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -110,7 +110,7 @@
 	return result;
 }
 
-static struct thermal_cooling_device_ops fan_cooling_ops = {
+static const struct thermal_cooling_device_ops fan_cooling_ops = {
 	.get_max_state = fan_get_max_state,
 	.get_cur_state = fan_get_cur_state,
 	.set_cur_state = fan_set_cur_state,