diff --git a/src/app/action/controllers/PreProcessActionController.php b/src/app/action/controllers/PreProcessActionController.php
index 33ae8c08382c5493c5fce816705813b28b633ddd..e3f7ef3eff1bda7c64f30f30007fa776c420fa4c 100755
--- a/src/app/action/controllers/PreProcessActionController.php
+++ b/src/app/action/controllers/PreProcessActionController.php
@@ -1011,7 +1011,7 @@ class PreProcessActionController
         $validatedResources     = [];
         foreach ($resources as $resource) {
             if (empty($resource['opinion_limit_date'])) {
-                $noOpinionLimitDate[] = $resources['alt_identifier'] ?? _UNDEFINED;
+                $noOpinionLimitDate[] = $resource['alt_identifier'] ?? _UNDEFINED;
             } else {
                 $note = NoteModel::getById([
                     'select'   => ['note_text', 'user_id', 'creation_date'],