diff --git a/drivers/zorro/zorro-driver.c b/drivers/zorro/zorro-driver.c
index 025edfccedcf..f49d19977e82 100644
--- a/drivers/zorro/zorro-driver.c
+++ b/drivers/zorro/zorro-driver.c
@@ -150,7 +150,7 @@ static int zorro_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	return 0;
 }
 
-struct bus_type zorro_bus_type = {
+const struct bus_type zorro_bus_type = {
 	.name		= "zorro",
 	.dev_name	= "zorro",
 	.dev_groups	= zorro_device_attribute_groups,
diff --git a/drivers/zorro/zorro.h b/drivers/zorro/zorro.h
index f84df9fb4c20..df44e35203fd 100644
--- a/drivers/zorro/zorro.h
+++ b/drivers/zorro/zorro.h
@@ -4,7 +4,7 @@
      *  Zorro bus
      */
 
-extern struct bus_type zorro_bus_type;
+extern const struct bus_type zorro_bus_type;
 
 
 #ifdef CONFIG_ZORRO_NAMES