diff --git a/mod/assign/lang/en/assign.php b/mod/assign/lang/en/assign.php
index 2c3b3990e55..d21b1d4cab8 100644
--- a/mod/assign/lang/en/assign.php
+++ b/mod/assign/lang/en/assign.php
@@ -368,6 +368,7 @@ $string['moreusers'] = '{$a} more...';
 $string['multipleteams'] = 'Member of more than one group';
 $string['multipleteams_desc'] = 'The assignment requires submission in groups. You are a member of more than one group. To be able to submit you must be a member of only one group. Please contact your teacher to change your group membership.';
 $string['multipleteamsgrader'] = 'Member of more than one group, so unable to make submissions.';
+$string['nextuser'] = "Next user";
 $string['newsubmissions'] = 'Assignments submitted';
 $string['noattempt'] = 'No attempt';
 $string['noclose'] = 'No close date';
@@ -418,6 +419,7 @@ $string['preventsubmissionnotingroup_help'] = 'If enabled, users who are not mem
 $string['preventsubmissions'] = 'Prevent the user from making any more submissions to this assignment.';
 $string['preventsubmissionsshort'] = 'Prevent submission changes';
 $string['previous'] = 'Previous';
+$string['previoususer'] = 'Previous user';
 $string['privacy:attemptpath'] = 'attempt {$a}';
 $string['privacy:blindmarkingidentifier'] = 'The identifier used for anonymous submissions';
 $string['privacy:gradepath'] = 'grade';
diff --git a/mod/assign/templates/grading_navigation_user_selector.mustache b/mod/assign/templates/grading_navigation_user_selector.mustache
index f370b3b5c03..9ae4492812e 100644
--- a/mod/assign/templates/grading_navigation_user_selector.mustache
+++ b/mod/assign/templates/grading_navigation_user_selector.mustache
@@ -30,11 +30,11 @@
 
     This template uses ajax functionality, so it cannot be shown in the template library.
 }}
-<a href="#previous" data-action="previous-user">{{{larrow}}}</a>
+<a href="#previous" data-action="previous-user" aria-label="{{#str}} previoususer, mod_assign {{/str}}" title="{{#str}} previoususer, mod_assign {{/str}}">{{{larrow}}}</a>
     <span data-region="input-field">
         <select data-action="change-user" data-currentuserid="{{currentuserid}}" data-assignmentid="{{assignmentid}}" data-groupid="{{groupid}}"></select>
     </span>
-<a href="#next" data-action="next-user">{{{rarrow}}}</a>
+<a href="#next" data-action="next-user" aria-label="{{#str}} nextuser, mod_assign {{/str}}" title="{{#str}} nextuser, mod_assign {{/str}}">{{{rarrow}}}</a>
 
 <br>