diff --git a/ontology/update.py b/ontology/update.py
index de51c31..c4dfb43 100755
--- a/ontology/update.py
+++ b/ontology/update.py
@@ -22,10 +22,12 @@ def find_path(parent, root=None, path=None):
                 return r
 
 def get_node(name, children, parent=None):
+    children_ = [get_node(child, children[child], name) for child in children]
+    children_.sort(key=lambda c: c['name'])
     node = {
         "size": len(children) + 100,
         "name": name,
-        "children": [get_node(child, children[child], name) for child in children]
+        "children": children_
     }
     if not node['children']:
         del node['children']