diff --git a/drivers/peci/core.c b/drivers/peci/core.c
index 0f83a9c6093b..b2f8db967e9b 100644
--- a/drivers/peci/core.c
+++ b/drivers/peci/core.c
@@ -201,7 +201,7 @@ static void peci_bus_device_remove(struct device *dev)
 		driver->remove(device);
 }
 
-struct bus_type peci_bus_type = {
+const struct bus_type peci_bus_type = {
 	.name		= "peci",
 	.match		= peci_bus_device_match,
 	.probe		= peci_bus_device_probe,
diff --git a/drivers/peci/internal.h b/drivers/peci/internal.h
index 9d75ea54504c..8a896c256c5f 100644
--- a/drivers/peci/internal.h
+++ b/drivers/peci/internal.h
@@ -81,7 +81,7 @@ extern const struct attribute_group *peci_device_groups[];
 int peci_device_create(struct peci_controller *controller, u8 addr);
 void peci_device_destroy(struct peci_device *device);
 
-extern struct bus_type peci_bus_type;
+extern const struct bus_type peci_bus_type;
 extern const struct attribute_group *peci_bus_groups[];
 
 /**