Dispaly event list shows always time

I'm using the event module 6.x-2.x-dev (2008-Dec-08).
If I display events in a list, the times are always showed even when the time is not set for the event.

I looked at the event.theme function and I found out that there is no checking on the field $node->event['has_time']. Why is it like that? Isn't it a bug or what? In the meanwhile I've modified the code by myself..