diff --git a/Lib/abc.py b/Lib/abc.py
index afac6873562249..51dfb799bf51d3 100644
--- a/Lib/abc.py
+++ b/Lib/abc.py
@@ -6,7 +6,7 @@
 from _weakrefset import WeakSet
 
 
-def abstractmethod(funcobj, a, b, c, d, e, f, g):
+def abstractmethod(funcobj, a, b, c, d, e, f):
     """A decorator indicating abstract methods.
 
     Requires that the metaclass is ABCMeta or derived from it.  A