diff --git a/lark/visitors.py b/lark/visitors.py
index ad34327..0cd5e05 100644
--- a/lark/visitors.py
+++ b/lark/visitors.py
@@ -69,9 +69,8 @@ class Transformer:
             if name.startswith('_') or name in libmembers:
                 continue
 
-            if isinstance(cls.__dict__[name], (staticmethod, classmethod)):
-                kwargs['static'] = True
-            setattr(cls, name, decorator(value, **kwargs))
+            static = isinstance(cls.__dict__[name], (staticmethod, classmethod))
+            setattr(cls, name, decorator(value, static=static, **kwargs))
         return cls