diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab27e6d..faaa91f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 
 - Fix locales encoding
+- Fix group assignment when applying uninstall templates on assignable items
 
 ## [2.10.3] - 2025-11-25
 
diff --git a/inc/uninstall.class.php b/inc/uninstall.class.php
index cac884c..3b48e7a 100644
--- a/inc/uninstall.class.php
+++ b/inc/uninstall.class.php
@@ -29,6 +29,7 @@
  */
 
 use Glpi\Asset\Asset_PeripheralAsset;
+use Glpi\Features\AssignableItemInterface;
 
 use function Safe\preg_grep;
 
@@ -213,7 +214,10 @@ private static function doOneUninstall(PluginUninstallModel $model, Transfer $tr
             }
         }
 
-        if ($item->isField('groups_id')) {
+        if (
+            $item->isField('groups_id')
+            || ($item instanceof AssignableItemInterface)
+        ) {
             $nbgroup = countElementsInTableForEntity(
                 "glpi_groups",
                 $entity,