diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 74471e7aa5cc42d82305967bc5a1795363fb5895..0f614dfcb09f1c09157816f0d9fa08d72dec0b95 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -568,7 +568,7 @@ static struct attribute *w1_master_default_attrs[] = {
 	NULL
 };
 
-static struct attribute_group w1_master_defattr_group = {
+static const struct attribute_group w1_master_defattr_group = {
 	.attrs = w1_master_default_attrs,
 };