diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 1be5dd048622f6c8c4f9aa805514b9fd5b5c5d7b..cbd3836ec8fa376bad9b2a1bef70b9bb056f5979 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -518,7 +518,7 @@ static void mn_release(struct mmu_notifier *mn,
 	mutex_unlock(&priv->lock);
 }
 
-static struct mmu_notifier_ops gntdev_mmu_ops = {
+static const struct mmu_notifier_ops gntdev_mmu_ops = {
 	.release                = mn_release,
 	.invalidate_page        = mn_invl_page,
 	.invalidate_range_start = mn_invl_range_start,