# UNDF: UNDF-2026-000000915
--- a/models/boards.js
+++ b/models/boards.js
@@ -1186,9 +1186,10 @@
   setNewLabelOrder(newLabelOrderOnlyIds) {
     if (this.labels.length == newLabelOrderOnlyIds.length) {
-      if (this.labels.every(_label => newLabelOrderOnlyIds.indexOf(_label._id) >= 0)) {
-        const newLabels = [...this.labels].sort((a, b) => newLabelOrderOnlyIds.indexOf(a._id) - newLabelOrderOnlyIds.indexOf(b._id));
+      const orderMap = new Map(newLabelOrderOnlyIds.map((id, idx) => [id, idx]));
+      if (this.labels.every(_label => orderMap.has(_label._id))) {
+        const newLabels = [...this.labels].sort((a, b) => orderMap.get(a._id) - orderMap.get(b._id));
         if (this.labels.length == newLabels.length) {
           Boards.direct.update(this._id, {$set: {labels: newLabels}});
         }