diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 5feb335..32aa66d7 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -1173,7 +1173,7 @@
  * longer needed. The passive cooling formula uses tc1 and tc2 as described in
  * section 11.1.5.1 of the ACPI specification 3.0.
  */
-struct thermal_zone_device *thermal_zone_device_register(char *type,
+struct thermal_zone_device *thermal_zone_device_register(const char *type,
 	int trips, int mask, void *devdata,
 	const struct thermal_zone_device_ops *ops,
 	int tc1, int tc2, int passive_delay, int polling_delay)
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 6eaf914..4821735 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -146,7 +146,7 @@
 };
 #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)
 
-struct thermal_zone_device *thermal_zone_device_register(char *, int, int,
+struct thermal_zone_device *thermal_zone_device_register(const char *, int, int,
 		void *, const struct thermal_zone_device_ops *, int tc1,
 		int tc2, int passive_freq, int polling_freq);
 void thermal_zone_device_unregister(struct thermal_zone_device *);