diff --git a/plugins/sedi/add.php b/plugins/sedi/add.php
index 76a92abbe..e675cac33 100755
--- a/plugins/sedi/add.php
+++ b/plugins/sedi/add.php
@@ -108,7 +108,7 @@ echo '
         <div class="card-header with-border">
             <h3 class="card-title">'.tr('Dettagli aggiuntivi').'</h3>
             <div class="card-tools pull-right">
-                <button type="button" class="btn btn-tool" data-widget="collapse">
+                <button type="button" class="btn btn-tool" data-card-widget="collapse">
                     <i class="fa fa-'.(empty($espandi_dettagli) ? 'plus' : 'minus').'"></i>
                 </button>
             </div>