diff --git a/module/actor.js b/module/actor.js
index 2ecae44a..5ee13feb 100644
--- a/module/actor.js
+++ b/module/actor.js
@@ -112,6 +112,16 @@ export class RdDActor extends Actor {
     if (actorData.type === 'vehicule') this._prepareVehiculeData(actorData);
   }
 
+  /* -------------------------------------------- */
+  setRollWindowsOpened( flag ) {
+    this.rollWindowsOpened = flag;
+  }
+
+  /* -------------------------------------------- */
+  isRollWindowsOpened( ) {
+    return this.rollWindowsOpened;
+  }
+
   /* -------------------------------------------- */
   _prepareCreatureData(actorData) {
     this.computeEncombrementTotalEtMalusArmure();
diff --git a/module/rdd-roll.js b/module/rdd-roll.js
index aff36f6b..079fc277 100644
--- a/module/rdd-roll.js
+++ b/module/rdd-roll.js
@@ -18,6 +18,12 @@ export class RdDRoll extends Dialog {
   /* -------------------------------------------- */
   static async create(actor, rollData, dialogConfig, ...actions) {
 
+    if (actor.isRollWindowsOpened() ) {
+      ui.notifications.warn("Vous avez déja une fenêtre de Test ouverte, il faut la fermer avant d'en ouvrir une autre.")
+      return;
+    }
+    actor.setRollWindowsOpened(true);
+
     RdDRoll._ensureCorrectActions(actions);
     RdDRoll._setDefaultOptions(actor, rollData);
 
@@ -102,6 +108,7 @@ export class RdDRoll extends Dialog {
 
   close() {
     if (this.rollData.canClose) {
+      this.actor.setRollWindowsOpened(false);
       return super.close();
     }
     ui.notifications.info("Vous devez faire ce jet de dés!");
@@ -112,7 +119,8 @@ export class RdDRoll extends Dialog {
   async onAction(action, html) {
     await RdDResolutionTable.rollData(this.rollData);
     console.log("RdDRoll -=>", this.rollData, this.rollData.rolled);
-
+    this.actor.setRollWindowsOpened(false);
+    
     if (action.callbacks)
       for (let callback of action.callbacks) {
         if (callback.condition == undefined || callback.condition(this.rollData)) {
diff --git a/system.json b/system.json
index 871d9a2e..1e23b4f2 100644
--- a/system.json
+++ b/system.json
@@ -2,7 +2,7 @@
   "name": "foundryvtt-reve-de-dragon",
   "title": "Rêve de Dragon",
   "description": "Rêve de Dragon RPG for FoundryVTT",
-  "version": "1.3.23",
+  "version": "1.3.24",
   "manifestPlusVersion": "1.0.0",
   "minimumCoreVersion": "0.7.5",
   "compatibleCoreVersion": "0.7.9",