diff --git a/Lib/calendar.py b/Lib/calendar.py
index 02050ea..90cc082 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -14,9 +14,6 @@ __all__ = ["IllegalMonthError", "IllegalWeekdayError", "setfirstweekday",
            "monthcalendar", "prmonth", "month", "prcal", "calendar",
            "timegm", "month_name", "month_abbr", "day_name", "day_abbr"]
 
-# Exception raised for bad input (with string parameter for details)
-error = ValueError
-
 # Exceptions raised for bad input
 class IllegalMonthError(ValueError):
     def __init__(self, month):