diff --git a/storage/cmix/store.go b/storage/cmix/store.go
index f308eb5b34950ebc977cd22c3068f5114c84cf4e..1a9e352265cd83e838153cf331c77ace7d012903 100644
--- a/storage/cmix/store.go
+++ b/storage/cmix/store.go
@@ -211,6 +211,7 @@ func (s *Store) marshal() ([]byte, error) {
 	index := 0
 	for nid := range s.nodes {
 		nodes[index] = nid
+		index++
 	}
 
 	return json.Marshal(&nodes)