diff --git a/pyfritzhome/errors.py b/pyfritzhome/errors.py
index <HASH>..<HASH> 100644
--- a/pyfritzhome/errors.py
+++ b/pyfritzhome/errors.py
@@ -7,6 +7,3 @@ class LoginError(Exception):
 
 class InvalidError(Exception):
     pass
-
-class NotImplemented(Exception):
-    pass
remove redfine of built-in exception