How do i stop creating Anchor link in header column of Grid

Question

How do i stop creating Anchor link in header column of Asp.net grid?

I do not want clickable pointer and link in my column. How do i remove it?

<td align="center" style="width:70px;">
<a href="javascript:__doPostBack('datStores$ctl01$ctl05','')">
St
</a>
</td>