diff --git a/src/material/datepicker/calendar-body.html b/src/material/datepicker/calendar-body.html
index a59bd39774d8..ffdfef27c1cd 100644
--- a/src/material/datepicker/calendar-body.html
+++ b/src/material/datepicker/calendar-body.html
@@ -60,6 +60,6 @@
         [class.mat-calendar-body-today]="todayValue === item.compareValue">
         {{item.displayValue}}
       </div>
-      <div class="mat-calendar-body-cell-preview"></div>
+      <div class="mat-calendar-body-cell-preview" aria-hidden="true"></div>
   </td>
 </tr>