diff --git a/inc/tag.class.php b/inc/tag.class.php
index ff20fb9..29f3f61 100644
--- a/inc/tag.class.php
+++ b/inc/tag.class.php
@@ -600,6 +600,7 @@ public static function showTagDropdown($params = [])
             'id'       => 0,
             'itemtype' => '',
             'value'    => '',
+            'items_ids' => [],
         ];
         $params = array_merge($default_params, $params);
 
@@ -701,10 +702,16 @@ public static function showTagDropdown($params = [])
             $token_creation = "return null;";
         }
 
+        // Returns false if at least one item in "items_ids" cannot be updated
+        $can_update_all = count(array_filter($params['items_ids'], function ($value) use ($obj) {
+            $obj->getFromDB($value);
+            return !$obj->canUpdateItem();
+        })) === 0;
+
         $readOnly = !$tag::canUpdate()
             || ($obj->isNewItem() && !$obj->canCreateItem())
             || (!$obj->isNewItem() && !$obj->canUpdateItem())
-        ;
+            || (!empty($params['items_ids']) && !$can_update_all);
 
        // call select2 lib for this input
         echo Html::scriptBlock("
diff --git a/inc/tagitem.class.php b/inc/tagitem.class.php
index 80b216d..a930617 100644
--- a/inc/tagitem.class.php
+++ b/inc/tagitem.class.php
@@ -492,7 +492,7 @@ public static function showMassiveActionsSubForm(MassiveAction $ma)
         switch ($ma->getAction()) {
             case 'addTag':
             case 'removeTag':
-                PluginTagTag::showTagDropdown(['itemtype' => $itemtype]);
+                PluginTagTag::showTagDropdown(['itemtype' => $itemtype, 'items_ids' => array_keys($ma->items[$itemtype])]);
                 echo Html::submit(_sx('button', 'Save'));
                 return true;
         }