diff --git a/src/app/services/formulaire/formulaire.service.ts b/src/app/services/formulaire/formulaire.service.ts
index 4e8fe3393a818890bd277c07ccd7ee6bd766373c..64c583b247bfbc2a17a3099d2cd71cd2c2f6daa2 100644
--- a/src/app/services/formulaire/formulaire.service.ts
+++ b/src/app/services/formulaire/formulaire.service.ts
@@ -23,6 +23,7 @@ import { FieldsetContainer } from "../..//formulaire/fieldset-container";
 import { ApplicationSetupService } from "../app-setup/app-setup.service";
 import { NotificationsService } from "../notifications/notifications.service";
 import { FormulairePab } from "../../formulaire/definition/concrete/form-pab";
+import { CloisonAval } from "jalhyd";
 
 @Injectable()
 export class FormulaireService extends Observable {
@@ -367,7 +368,7 @@ export class FormulaireService extends Observable {
                     new Props({
                         calcType: CalculatorType.ParallelStructure
                     })
-                ) as ParallelStructure;
+                ) as CloisonAval;
                 // add new default device for new downwall
                 const newDownwallDevice = Session.getInstance().createNub(
                     new Props({