diff --git a/kitty/config.py b/kitty/config.py
index a97a5e757..e47042f02 100644
--- a/kitty/config.py
+++ b/kitty/config.py
@@ -101,7 +101,6 @@ def func_with_args(*names):
         for name in names:
             if args_funcs.setdefault(name, f) is not f:
                 raise ValueError('the args_func {} is being redefined'.format(name))
-            args_funcs[name] = f
         return f
 
     return w