diff --git a/backtrader/feed.py b/backtrader/feed.py
index 1145c997b..39a1f0d1a 100644
--- a/backtrader/feed.py
+++ b/backtrader/feed.py
@@ -86,8 +86,8 @@ def dopostinit(cls, _obj, *args, **kwargs):
             _obj.p.sessionend = _obj.p.sessionend.time()
 
         elif _obj.p.sessionend is None:
-            # remove 9 to avoid precision rounding errors
-            _obj.p.sessionend = datetime.time(23, 59, 59, 999990)
+            # remove 99 to avoid precision rounding errors
+            _obj.p.sessionend = datetime.time(23, 59, 59, 999900)
 
         if isinstance(_obj.p.fromdate, datetime.date):
             # push it to the end of the day, or else intraday