diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index 19be0607..78289fa3 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -668,7 +668,7 @@ class ModelForest {
 
         var children = this.get_children(node);
 
-        if (children) {
+        if (children && children.length) {
             if (struct_data.child_sort)
                 children.sort(struct_data.child_sort);
             else