Fixed a missing call to get_timezone

diff --git a/babel/dates.py b/babel/dates.py
index c15015af37b089503a8e6683f074718acc4fbc1b..ad7f76e30057e5bad381a9687943d6dedc82d728 100644 (file)
--- a/babel/dates.py
+++ b/babel/dates.py
@@ -589,7 +589,7 @@ def format_datetime(datetime=None, format='medium', tzinfo=None,
     if datetime.tzinfo is None:
         datetime = datetime.replace(tzinfo=UTC)
     if tzinfo is not None:
-        datetime = datetime.astimezone(tzinfo)
+        datetime = datetime.astimezone(get_timezone(tzinfo))
         if hasattr(tzinfo, 'normalize'): # pytz
             datetime = tzinfo.normalize(datetime)