CRM_Case_BAO_Case::getCaseActivity is matching on the label instead of the name when deciding what class to output

These lines:

if ( !empty($dao->priority) ) {
if ( $activityPriority[$dao->priority] == 'Urgent' )

{ $values[$dao->id]['class'] = $values[$dao->id]['class']."priority-urgent "; }

else if ( $activityPriority[$dao->priority] == 'Low' )

{ $values[$dao->id]['class'] = $values[$dao->id]['class']."priority-low "; }

}

if( $values[$dao->id]['status'] == 'Scheduled' )

{ $values[$dao->id]['class'] = $values[$dao->id]['class']."status-scheduled"; }

else

{ $values[$dao->id]['class'] = $values[$dao->id]['class']."status-completed"; }

If I change the label column in the option_values table it no longer outputs the correct class.