diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
index 079bd14bdedc..a7a3e3b66bb5 100644
--- a/drivers/base/swnode.c
+++ b/drivers/base/swnode.c
@@ -518,7 +518,7 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode,
 	if (prop->is_inline)
 		return -EINVAL;
 
-	if (index * sizeof(*ref) >= prop->length)
+	if ((index + 1) * sizeof(*ref) > prop->length)
 		return -ENOENT;
 
 	ref_array = prop->pointer;