diff --git a/module/rdd-commands.js b/module/rdd-commands.js
index 7b3deebe..c24e8af0 100644
--- a/module/rdd-commands.js
+++ b/module/rdd-commands.js
@@ -331,7 +331,7 @@ export class RdDCommands {
           diff = 0;
         }
         const caracName = params[0];
-        let competence = length > 1 ? actors[0].getCompetence(Misc.join(params.slice(1, length), ' ')) : undefined;
+        let competence = length > 1 ? actors[0].getCompetence(Misc.join(params.slice(1, length), ' ')) : {name:undefined};
         if (competence) {
           for (let actor of actors) {
             await actor.rollCaracCompetence(caracName, competence.name, diff);