diff --git a/mm/ksm.c b/mm/ksm.c
index db20f8436bc3..15dd7415f7b3 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -3043,7 +3043,7 @@ static struct attribute *ksm_attrs[] = {
 	NULL,
 };
 
-static struct attribute_group ksm_attr_group = {
+static const struct attribute_group ksm_attr_group = {
 	.attrs = ksm_attrs,
 	.name = "ksm",
 };