#2869: remove parameter from signature.
diff --git a/Doc/library/calendar.rst b/Doc/library/calendar.rst
index 6e8a03c..f2e2183 100644
--- a/Doc/library/calendar.rst
+++ b/Doc/library/calendar.rst
@@ -37,7 +37,7 @@
    :class:`Calendar` instances have the following methods:
 
 
-   .. method:: iterweekdays(weekday)
+   .. method:: iterweekdays()
 
       Return an iterator for the week day numbers that will be used for one
       week.  The first value from the iterator will be the same as the value of