diff --git a/js/cell.js b/js/cell.js
index 5cb402d9..030c5ebd 100644
--- a/js/cell.js
+++ b/js/cell.js
@@ -39,7 +39,7 @@ var proto = Cell.prototype;
 
 proto.create = function() {
   this.element.style.position = 'absolute';
-  this.element.setAttribute( 'aria-selected', 'false' );
+  this.element.setAttribute( 'aria-hidden', 'true' );
   this.x = 0;
   this.shift = 0;
 };
@@ -48,7 +48,7 @@ proto.destroy = function() {
   // reset style
   this.element.style.position = '';
   var side = this.parent.originSide;
-  this.element.removeAttribute('aria-selected');
+  this.element.removeAttribute( 'aria-hidden' );
   this.element.style[ side ] = '';
 };
 
diff --git a/js/slide.js b/js/slide.js
index 9515bf8e..c8cfa7cc 100644
--- a/js/slide.js
+++ b/js/slide.js
@@ -63,7 +63,11 @@ proto.changeSelected = function( isSelected ) {
   var classMethod = isSelected ? 'add' : 'remove';
   this.cells.forEach( function( cell ) {
     cell.element.classList[ classMethod ]('is-selected');
-    cell.element.setAttribute( 'aria-selected', isSelected.toString() );
+    if ( isSelected ) {
+      cell.element.removeAttribute( 'aria-hidden' );
+    } else {
+      cell.element.setAttribute( 'aria-hidden', 'true' );
+    }
   });
 };