diff --git a/lib/Alchemy/Phrasea/Core/Event/Record/CollectionChangedEvent.php b/lib/Alchemy/Phrasea/Core/Event/Record/CollectionChangedEvent.php
index 4df1fe8d14..4922e1bdb9 100644
--- a/lib/Alchemy/Phrasea/Core/Event/Record/CollectionChangedEvent.php
+++ b/lib/Alchemy/Phrasea/Core/Event/Record/CollectionChangedEvent.php
@@ -25,12 +25,12 @@ class CollectionChangedEvent extends RecordEvent
 
         $this->beforeCollection = [
             'collection_name'   => $beforeCol->get_name(),
-            'collection_id'     => $beforeCol->get_base_id()
+            'base_id'           => $beforeCol->get_base_id()
         ];
 
         $this->afterCollection = [
             'collection_name'   => $afterCol->get_name(),
-            'collection_id'     => $afterCol->get_base_id()
+            'base_id'           => $afterCol->get_base_id()
         ];
     }