diff --git a/scripts/generate.py b/scripts/generate.py
index c14dd507..412def77 100644
--- a/scripts/generate.py
+++ b/scripts/generate.py
@@ -50,8 +50,7 @@ def gen_apidoc(pvd: str, typ_paths: dict) -> str:
         return name
 
     typ_classes = {}
-    sorted_typ_paths = sorted(typ_paths.items(), key=lambda x:x[0])
-    for typ, paths in sorted_typ_paths:
+    for typ, paths in sorted(typ_paths.items()):
         typ_classes[typ] = []
         for name in map(_gen_class_name, paths):
             alias = cfg.ALIASES[pvd].get(typ, {}).get(name)