diff --git a/src/wp-admin/includes/class-wp-media-list-table.php b/src/wp-admin/includes/class-wp-media-list-table.php
index ee066adcad..a364578621 100644
--- a/src/wp-admin/includes/class-wp-media-list-table.php
+++ b/src/wp-admin/includes/class-wp-media-list-table.php
@@ -496,7 +496,7 @@ foreach ( $columns as $column_name => $column_display_name ) {
 						/* translators: used between list items, there is a space after the comma */
 						echo join( __( ', ' ), $out );
 					} else {
-						echo '—';
+						echo '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . get_taxonomy( $taxonomy )->labels->not_found . '</span>';
 					}
 
 					break;
diff --git a/src/wp-admin/includes/class-wp-posts-list-table.php b/src/wp-admin/includes/class-wp-posts-list-table.php
index 15ba2b591c..ae9c0ec562 100644
--- a/src/wp-admin/includes/class-wp-posts-list-table.php
+++ b/src/wp-admin/includes/class-wp-posts-list-table.php
@@ -907,7 +907,7 @@ class WP_Posts_List_Table extends WP_List_Table {
 							/* translators: used between list items, there is a space after the comma */
 							echo join( __( ', ' ), $out );
 						} else {
-							echo '&#8212;';
+							echo '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . $taxonomy_object->labels->not_found . '</span>';
 						}
 						break;
 					}