Table Column Labels

I have a table and one of the columns is an icon and so I don't want a label to show. I do this by setting

->label('')

->label('')

because there doesn't seem to be a

->hiddenLabel()

->hiddenLabel()

on table columns.

However, when I set

->toggleable()

->toggleable()

on the column it appears in the list with no label - like the below.

Any ideas how to get around this?