diff --git a/classes/output/sort_voting_form.php b/classes/output/sort_voting_form.php
index 55aaf0d..2aa81a8 100644
--- a/classes/output/sort_voting_form.php
+++ b/classes/output/sort_voting_form.php
@@ -83,6 +83,7 @@ public function export_for_template(renderer_base $output): array {
         return [
             'sortvotingid' => $this->sortvoting->id,
             'allowupdate' => $allowupdate,
+            'alreadyvoted' => count($existingvotes) > 0,
             'options' => $optionsclean,
             'max' => count($options),
         ];
diff --git a/templates/sort_voting_form.mustache b/templates/sort_voting_form.mustache
index a9c2e9b..65ac8cc 100644
--- a/templates/sort_voting_form.mustache
+++ b/templates/sort_voting_form.mustache
@@ -73,7 +73,10 @@
 </ul>
 
 {{#allowupdate}}
-<button class="btn btn-primary" data-action="savevote" title="{{#str}} save {{/str}}">{{#str}} save {{/str}}</button>
+<button class="btn btn-primary" data-action="savevote"
+    {{#alreadyvoted}} title="{{#str}} update {{/str}}">{{#str}} update {{/str}}{{/alreadyvoted}}
+    {{^alreadyvoted}} title="{{#str}} save {{/str}}">{{#str}} save {{/str}}{{/alreadyvoted}}
+</button>
 {{#js}}
     require(['mod_sortvoting/sortvoting'], function(sortvoting) {
         sortvoting.init();