diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 916076a..36c6a97 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -1110,7 +1110,7 @@
         result = result + self.section('FILE', file)
         return result
 
-    def docclass(self, object, name=None, mod=None):
+    def docclass(self, object, name=None, mod=None, *ignored):
         """Produce text documentation for a given class object."""
         realname = object.__name__
         name = name or realname