UITableHeaderFooterView due to xib key value crash

I am making the table title from XIB, however I am continuing to crash to match the key value values ​​on my labels in the header on this line.

UIView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"MileageEntryTableHeaderView"];

In my view, DidLoad I call

[_tableView registerNib:[UINib nibWithNibName:@"MileageEntryTableHeaderView" bundle:nil] forHeaderFooterViewReuseIdentifier:@"MileageEntryTableHeaderView"];

then in my doing - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)sectionI have

UIView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"MileageEntryTableHeaderView"];
return headerView;

My tags in xib are standard tags. I place them in my .h and linked them in my xib from the file owner. (right-click file owner, drag the corresponding label). What exactly causes my failure here?