diff --git a/module/item.js b/module/item.js
index 175bfaa8..7bfcb36c 100644
--- a/module/item.js
+++ b/module/item.js
@@ -3,6 +3,7 @@ import { Grammar } from "./grammar.js";
 import { Misc } from "./misc.js";
 import { RdDHerbes } from "./rdd-herbes.js";
 import { RdDUtility } from "./rdd-utility.js";
+import { SystemCompendiums } from "./settings/system-compendiums.js";
 
 const typesObjetsInventaire = [
   "arme",
@@ -69,7 +70,7 @@ export const defaultItemImg = {
 export class RdDItem extends Item {
 
   static getDefaultImg(itemType) {
-    return defaultItemImg[itemType];
+    return game.system.rdd.itemClasses[itemType]?.defaultIcon ?? defaultItemImg[itemType];
   }
 
   static isItemInventaire(newLocal) {
@@ -92,6 +93,42 @@ export class RdDItem extends Item {
     return true;
   }
 
+  static async getCorrespondingItem(itemRef) {
+    if (itemRef.pack) {
+      return await SystemCompendiums.loadDocument(itemRef)
+    }
+    return game.items.get(itemRef.id ?? itemRef._id);
+  }
+
+  static getItemTypesInventaire() {
+    return typesObjetsInventaire
+  }
+
+  static getTypesOeuvres() {
+    return typesObjetsOeuvres
+  }
+
+  constructor(docData, context = {}) {
+    if (!context.rdd?.ready) {
+      mergeObject(context, { rdd: { ready: true } });
+      const ItemConstructor = game.system.rdd.itemClasses[docData.type];
+      if (ItemConstructor) {
+        if (!docData.img) {
+          docData.img = ItemConstructor.defaultIcon;
+        }
+        return new ItemConstructor(docData, context);
+      }
+    }
+    if (!docData.img) {
+      docData.img = RdDItem.getDefaultImg(docData.type);
+    }
+    super(docData, context);
+  }
+
+  static get defaultIcon() {
+    return undefined;
+  }
+
   getUniteQuantite() {
     switch (this.type) {
       case "monnaie": return "(Pièces)"
@@ -107,27 +144,12 @@ export class RdDItem extends Item {
     return '';
   }
 
-  constructor(itemData, context) {
-    if (!itemData.img) {
-      itemData.img = RdDItem.getDefaultImg(itemData.type);
-    }
-    super(itemData, context);
-  }
-
-  static getItemTypesInventaire() {
-    return typesObjetsInventaire
-  }
-
-  static getTypesOeuvres() {
-    return typesObjetsOeuvres
-  }
-
-  isCompetencePersonnage() {
-    return this.type == 'competence'
-  }
-  isCompetenceCreature() {
-    return this.type == 'competencecreature'
-  }
+  isCompetencePersonnage() { return this.type == 'competence' }
+  isCompetenceCreature() { return this.type == 'competencecreature' }
+  isConteneur() { return this.type == 'conteneur'; }
+  isMonnaie() { return this.type == 'monnaie'; }
+  isNourritureBoisson() { return this.type == 'nourritureboisson'; }
+  isService() { return this.type == 'service'; }
   isCompetence() {
     return typesObjetsCompetence.includes(this.type)
   }
@@ -146,12 +168,7 @@ export class RdDItem extends Item {
   isConnaissance() {
     return typesObjetsConnaissance.includes(this.type)
   }
-  isConteneur() {
-    return this.type == 'conteneur';
-  }
-  isMonnaie() {
-    return this.type == 'monnaie';
-  }
+
 
   getItemGroup() {
     if (this.isInventaire()) return "equipement";
@@ -175,10 +192,6 @@ export class RdDItem extends Item {
     return !this.isConteneur() || (this.system.contenu?.length ?? 0) == 0;
   }
 
-  isNourritureBoisson() {
-    return this.type == 'nourritureboisson';
-  }
-
   isComestible() {
     switch (this.type) {
       case 'nourritureboisson': return 'pret';
diff --git a/module/rdd-main.js b/module/rdd-main.js
index c7d5b212..4e192d99 100644
--- a/module/rdd-main.js
+++ b/module/rdd-main.js
@@ -51,6 +51,10 @@ export class SystemReveDeDragon {
   constructor() {
     this.RdDUtility = RdDUtility;
     this.RdDHotbar = RdDHotbar;
+    this.itemClasses = {
+    }
+    this.actorClasses = {
+    }
   }
 
   /* -------------------------------------------- */