t('Click sort column') cause context sensitive translation issues

t('Click sort column') can have different meaning and need to be clear.

It could mean:

• You should click on the sort column
• The clickable sort column itself

Hope this explain the problem.

      $form['click_sort_column'] = array(
        '#type' => 'select',
        '#title' => t('Click sort column'),
        '#options' => drupal_map_assoc($column_names),
        '#default_value' => $this->options['click_sort_column'],
        '#description' => t('Used by Style: Table to determine the actual column to click sort the field on. The default is usually fine.'),
        '#fieldset' => 'more',
      );

How should the field named better?