diff --git a/module/actor.js b/module/actor.js
index 207907a7..c3503f82 100644
--- a/module/actor.js
+++ b/module/actor.js
@@ -289,8 +289,18 @@ export class RdDActor extends Actor {
   filterItemsData(filter) {
     return this.data.items.map(it => Misc.data(it)).filter(filter);
   }
+  filterItems(filter) {
+    return this.data.items.filter(it => filter(Misc.data(it)));
+  }
   getItemOfType(id, type) {
-    return id ? this.data.items.find(it => it.id == id && Misc.data(it).type == type) : undefined;
+    if (id && type) {
+      let itemById = this.data.items.find(it => it.id == id);
+      const itemData = Misc.data(itemById);
+      if (itemData.type == type) {
+        return itemById;
+      }
+    }
+    return undefined;
   }
   getMonnaie(id) {
     return this.getItemOfType(id, 'monnaie');
@@ -1697,6 +1707,7 @@ export class RdDActor extends Actor {
     switch (Misc.data(item).type) {
       case 'nourritureboisson': return await this.actionNourritureboisson(item);
       case 'potion': return await this.actionPotion(item);
+      case 'livre': return await this.actionLire(item);
     }
   }
 
@@ -1708,6 +1719,12 @@ export class RdDActor extends Actor {
   async actionPotion(item) {
     return await this.consommerPotion(item)
   }
+  async actionLire(item) {
+    const tache = await this.creerTacheDepuisLivre(item, { renderSheet: false });
+    if (tache) {
+      await this.rollTache(tache.id);
+    }
+  }
 
   /* -------------------------------------------- */
   async consommer(item, choix) {
@@ -2271,22 +2288,29 @@ export class RdDActor extends Actor {
   }
 
   /* -------------------------------------------- */
-  async creerTacheDepuisLivre(item) {
+  async creerTacheDepuisLivre(item, options = { renderSheet: true }) {
     const itemData = Misc.data(item);
-    let tache = {
-      name: "Lire " + item.name, type: 'tache',
-      data: {
-        carac: 'intellect',
-        competence: 'Ecriture',
-        difficulte: itemData.data.difficulte,
-        periodicite: "60 minutes",
-        fatigue: 2,
-        points_de_tache: itemData.data.points_de_tache,
-        points_de_tache_courant: 0,
-        description: "Lecture du livre " + item.name + " - XP : " + itemData.data.xp + " - Compétences : " + itemData.data.competence
+    const nomTache = "Lire " + itemData.name;
+    const filterTacheLecture = it => it.type == 'tache' && it.name == nomTache;
+    let tachesExistantes = this.filterItems(filterTacheLecture);
+    if (tachesExistantes.length == 0) {
+      const tache = {
+        name: nomTache, type: 'tache',
+        data: {
+          carac: 'intellect',
+          competence: 'Ecriture',
+          difficulte: itemData.data.difficulte,
+          periodicite: "60 minutes",
+          fatigue: 2,
+          points_de_tache: itemData.data.points_de_tache,
+          points_de_tache_courant: 0,
+          description: "Lecture du livre " + item.name + " - XP : " + itemData.data.xp + " - Compétences : " + itemData.data.competence
+        }
       }
+      await this.createEmbeddedDocuments('Item', [tache], options);
+      tachesExistantes = this.filterItems(filterTacheLecture);
     }
-    await this.createEmbeddedDocuments('Item', [tache], { renderSheet: true });
+    return tachesExistantes.length > 0 ? tachesExistantes[0] : undefined;
   }
 
   /* -------------------------------------------- */
@@ -2313,7 +2337,6 @@ export class RdDActor extends Actor {
       callbacks: [
         this.createCallbackExperience(),
         this.createCallbackAppelAuMoral(),
-        { condition: r => r.rolled.isETotal, action: r => this._tacheETotal(r) },
         { action: r => this._tacheResult(r) }
       ]
     });
@@ -2323,19 +2346,17 @@ export class RdDActor extends Actor {
   /* -------------------------------------------- */
   async _tacheResult(rollData) {
     // Mise à jour de la tache
+    rollData.tache = duplicate(rollData.tache);
     rollData.tache.data.points_de_tache_courant += rollData.rolled.ptTache;
+    if (rollData.rolled.isETotal){
+      rollData.tache.data.difficulte--;
+    }
     this.updateEmbeddedDocuments('Item', [rollData.tache]);
     this.santeIncDec("fatigue", rollData.tache.data.fatigue);
 
     RdDResolutionTable.displayRollData(rollData, this, 'chat-resultat-tache.html');
   }
 
-  /* -------------------------------------------- */
-  _tacheETotal(rollData) {
-    rollData.tache.data.difficulte--;
-    this.updateEmbeddedDocuments('Item', [rollData.tache]);
-  }
-
   /* -------------------------------------------- */
   async _rollArt(artData, selected, oeuvre, callBackResult = r => this._resultArt(r)) {
     const actorData = Misc.data(this);
diff --git a/module/item.js b/module/item.js
index 5259d4b5..cffc0737 100644
--- a/module/item.js
+++ b/module/item.js
@@ -95,6 +95,7 @@ export class RdDItem extends Item {
     switch (itemData.type) {
       case 'nourritureboisson': return itemData.data.boisson ? 'Boire' : 'Manger';
       case 'potion': return 'Boire';
+      case 'livre': return 'Lire';
     }
     if (options.warnIfNot) {
       ui.notifications.warn(`Impossible d'utilise un ${itemData.name}, aucune action associée définie.`);