diff --git a/src/material/core/option/optgroup.html b/src/material/core/option/optgroup.html
index 30b97b4a0f32..6fbc80f6bacc 100644
--- a/src/material/core/option/optgroup.html
+++ b/src/material/core/option/optgroup.html
@@ -1,6 +1,6 @@
 <span
   class="mat-mdc-optgroup-label"
-  aria-hidden="true"
+  role="presentation"
   [class.mdc-list-item--disabled]="disabled"
   [id]="_labelId">
   <span class="mdc-list-item__primary-text">{{ label }} <ng-content></ng-content></span>