UITableView not always highlighting selection...

I have a UITableView and I've implemented
- (void)tableViewUITableView *)tableView didSelectRowAtIndexPathNSIndexPath *)indexPath

to change to a new view when the user selects and item. It works but sometimes when I choose an item it just shows the new view and the item doesn't actually get selected(change to blue). This can be confusing to users, any ideas on how I can fix this?