How to use subreport to display report header when main report is empty?

I'm creating several reports for our company. And we would like to keep the headers of the reports consistent across all of the reports. I've created a subreport with the correct format for the header and inserted into the main report's Page header section, and use parameters to pass in the report name and such. However, whenever the main report returns an empty set of data, the subreport doesn't gets displayed.

Is there anyway to get around this problem?

Thanks.

Xuan Su