diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 55c9816506b06..695f6f5ad0382 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -6692,7 +6692,7 @@ static struct device_attribute wq_sysfs_unbound_attrs[] = {
 	__ATTR_NULL,
 };
 
-static struct bus_type wq_subsys = {
+static const struct bus_type wq_subsys = {
 	.name				= "workqueue",
 	.dev_groups			= wq_sysfs_groups,
 };