diff --git a/module/actor.js b/module/actor.js
index dbd479eb..140371c4 100644
--- a/module/actor.js
+++ b/module/actor.js
@@ -1569,8 +1569,15 @@ export class RdDActor extends Actor {
 
       let xp = Math.abs(rolled.finalLevel);
       let xpCarac = Math.floor(xp / 2); // impair: arrondi inférieur en carac
-      xpCarac = Math.max(xpCarac, 1);
-      let xpComp = xp - xpCarac;
+
+      let xpComp;
+      if (competenceName) {
+        xpComp = xp - xpCarac;
+      }
+      else {
+        xpComp = 0;
+        xpCarac = Math.max(xpCarac, 1);
+      }
 
       if ( competenceName  ) {
         let competence = duplicate( RdDUtility.findCompetence( this.data.items, competenceName ) );