diff --git a/module/rdd-main.js b/module/rdd-main.js
index cb47fd2e..761d6f85 100644
--- a/module/rdd-main.js
+++ b/module/rdd-main.js
@@ -70,7 +70,8 @@ const _patch_initiative = () => {
           }
           let compName = (armeCombat == undefined) ? "Corps à corps" : armeCombat.data.competence;
           competence = RdDItemCompetence.findCompetence(c.actor.data.items, compName);
-          rollFormula = "2+( ("+RdDUtility.calculInitiative(competence.data.niveau, c.actor.data.data.carac[competence.data.defaut_carac].value) + ")/100)";
+          let bonusEcaille = (armeCombat && armeCombat.data.magique) ? armeCombat.data.ecaille_efficacite : 0;
+          rollFormula = "2+( ("+RdDUtility.calculInitiative(competence.data.niveau, c.actor.data.data.carac[competence.data.defaut_carac].value, bonusEcaille) + ")/100)";
         }
       }
       //console.log("Combatat", c);
diff --git a/module/rdd-utility.js b/module/rdd-utility.js
index 42940840..5062a405 100644
--- a/module/rdd-utility.js
+++ b/module/rdd-utility.js
@@ -457,8 +457,9 @@ export class RdDUtility {
   }
 
   /* -------------------------------------------- */
-  static calculInitiative(niveau, caracValue) {
+  static calculInitiative(niveau, caracValue, bonusEcaille = 0) {
     let base = niveau + Math.floor(caracValue / 2);
+    base += bonusEcaille;
     return "1d6" + (base >= 0 ? "+" : "") + base;
   }