diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
index 1f2315858cc3..84a77ffa3dc4 100644
--- a/drivers/base/swnode.c
+++ b/drivers/base/swnode.c
@@ -537,7 +537,7 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode,
 	if (prop->is_inline)
 		return -EINVAL;
 
-	if ((index + 1) * sizeof(*ref) > prop->length)
+	if (index >= prop->length / sizeof(*ref))
 		return -ENOENT;
 
 	ref_array = prop->pointer;