diff --git a/src/app/services/internationalisation.service.ts b/src/app/services/internationalisation.service.ts
index af0f2d42e05abe4ee0c9d29a5c8fe528a7822baa..ba7e4cf84633d4bdf079f7bde4ca5b3bd6eb8023 100644
--- a/src/app/services/internationalisation.service.ts
+++ b/src/app/services/internationalisation.service.ts
@@ -62,7 +62,8 @@ export class I18nService extends Observable implements Observer {
     public async setLanguage(code: string) {
         /** excluded calculators */
         const childCalculatorType: CalculatorType[] = [
-            CalculatorType.Section, CalculatorType.Structure, CalculatorType.CloisonAval, CalculatorType.YAXN
+            CalculatorType.Section, CalculatorType.Structure, CalculatorType.CloisonAval, CalculatorType.YAXN,
+            CalculatorType.LechaptCalmon
         ];
 
         // ensure 2-letter language code