diff --git a/src/app/formulaire/elements/fieldset.ts b/src/app/formulaire/elements/fieldset.ts
index 2c130b65f125cd7cfac10ad3bdb843f90bf51eb7..3637d892d27725fe0d7a7d84ad805c3ee589f63b 100644
--- a/src/app/formulaire/elements/fieldset.ts
+++ b/src/app/formulaire/elements/fieldset.ts
@@ -365,6 +365,10 @@ export class FieldSet extends FormulaireElement implements IProperties {
 
     // interface IProperties
 
+    public hasProperty(key: string): boolean {
+        return this._nub.hasProperty(key);
+    }
+
     /**
      * list of properties keys
      */