diff --git a/drivers/bus/mhi/ep/internal.h b/drivers/bus/mhi/ep/internal.h
index 577965f95fda..512da7482acc 100644
--- a/drivers/bus/mhi/ep/internal.h
+++ b/drivers/bus/mhi/ep/internal.h
@@ -11,7 +11,7 @@
 
 #include "../common.h"
 
-extern struct bus_type mhi_ep_bus_type;
+extern const struct bus_type mhi_ep_bus_type;
 
 #define MHI_REG_OFFSET				0x100
 #define BHI_REG_OFFSET				0x200
diff --git a/drivers/bus/mhi/ep/main.c b/drivers/bus/mhi/ep/main.c
index cdea24e92919..86e003bc44e0 100644
--- a/drivers/bus/mhi/ep/main.c
+++ b/drivers/bus/mhi/ep/main.c
@@ -1703,7 +1703,7 @@ static int mhi_ep_match(struct device *dev, const struct device_driver *drv)
 	return 0;
 };
 
-struct bus_type mhi_ep_bus_type = {
+const struct bus_type mhi_ep_bus_type = {
 	.name = "mhi_ep",
 	.dev_name = "mhi_ep",
 	.match = mhi_ep_match,