diff --git a/fvtt-celestopol.mjs b/fvtt-celestopol.mjs
index 2d15920..c80c55c 100644
--- a/fvtt-celestopol.mjs
+++ b/fvtt-celestopol.mjs
@@ -137,16 +137,17 @@ Hooks.once("ready", () => {
 async function _migrateObsoleteItems() {
   const validTypes = new Set(["anomaly", "aspect", "equipment", "weapon", "armure"])
   for (const actor of game.actors) {
-    const toDelete = actor.items
+    // Utilise _source.items pour trouver les items qui n'ont pas pu s'initialiser
+    const toDelete = (actor._source?.items ?? [])
       .filter(i => !validTypes.has(i.type))
-      .map(i => i.id)
+      .map(i => i._id)
     if (toDelete.length) {
       console.warn(`${SYSTEM_ID} | Migration: suppression de ${toDelete.length} item(s) obsolète(s) sur ${actor.name}`, toDelete)
       await actor.deleteEmbeddedDocuments("Item", toDelete)
     }
   }
   // Items globaux (hors acteur)
-  const globalToDelete = game.items
+  const globalToDelete = game.items.contents
     .filter(i => !validTypes.has(i.type))
     .map(i => i.id)
   if (globalToDelete.length) {