diff --git a/src/DefaultSorter.ts b/src/DefaultSorter.ts
index be46554..50ac4d9 100644
--- a/src/DefaultSorter.ts
+++ b/src/DefaultSorter.ts
@@ -4,10 +4,10 @@ import {DataTable, SortEvent} from "./DataTable";
 @Component({
     selector: "mfDefaultSorter",
     template: `
-        <a style="cursor: pointer" (click)="sort()" class="text-nowrap">
+        <a style="cursor: pointer" (click)="sort()" class="text-nowrap" tabindex="0">
             <ng-content></ng-content>
-            <span *ngIf="isSortedByMeAsc" class="glyphicon glyphicon-triangle-top" aria-hidden="true"></span>
-            <span *ngIf="isSortedByMeDesc" class="glyphicon glyphicon-triangle-bottom" aria-hidden="true"></span>
+            <span *ngIf="isSortedByMeAsc" class="glyphicon glyphicon-triangle-top" aria-hidden="true" aria-label="asc"></span>
+            <span *ngIf="isSortedByMeDesc" class="glyphicon glyphicon-triangle-bottom" aria-hidden="true" aria-label="desc"></span>
         </a>`
 })
 export class DefaultSorter implements OnInit {
@@ -33,4 +33,4 @@ export class DefaultSorter implements OnInit {
             this.mfTable.setSort(this.sortBy, "asc");
         }
     }
-}
\ No newline at end of file
+}