diff --git a/commands/events.py b/commands/events.py
index 3d48645db7fe697ce26f4625977d29002fb29177..f8704590bcadf84c334b24a48fa6643a643d777d 100644
--- a/commands/events.py
+++ b/commands/events.py
@@ -282,7 +282,7 @@ class Command(BaseCommand):
                 window = window // 2
                 if window < datetime.timedelta(hours=1):
                     self.die("Too many events for delete in interval %s" % window)
-                event_ts -= window
+                event_ts += window
         if force:
             self.print("All data before %s from active events will be Remove..\n" % before)
             for i in reversed(range(1, 10)):