Two sorting icons - bootstrap

I have two sorting icons showing up. Both are from dataTables.bootstrap.min.css

table.dataTable thead .sorting:after {
opacity: 0.2;
content: "\e150";
}
AND
table.dataTable thead .sorting:after, table.dataTable thead .sorting_asc:after, table.dataTable thead .sorting_desc:after, table.dataTable thead .sorting_asc_disabled:after, table.dataTable thead .sorting_desc_disabled:after {
position: absolute;
bottom: 8px;
right: 8px;
display: block;
font-family: 'Glyphicons Halflings';
opacity: 0.5;
}

How do i handle this? Edit the CSS?