diff --git a/packages/code-du-travail-frontend/src/outils/DureePreavisLicenciement/__tests__/agreements/843.test.tsx b/packages/code-du-travail-frontend/src/outils/DureePreavisLicenciement/__tests__/agreements/843.test.tsx
index a692311a77..57aab4d7df 100644
--- a/packages/code-du-travail-frontend/src/outils/DureePreavisLicenciement/__tests__/agreements/843.test.tsx
+++ b/packages/code-du-travail-frontend/src/outils/DureePreavisLicenciement/__tests__/agreements/843.test.tsx
@@ -55,7 +55,7 @@ describe("DureePreavisLicenciement", () => {
       });
 
       it("should display expected answer", () => {
-        expect(screen.queryAllByText(/1.5 mois/g)[0]).toBeInTheDocument();
+        expect(screen.queryAllByText(/1 mois et demi/g)[0]).toBeInTheDocument();
 
         expect(
           screen.queryAllByText(
diff --git a/packages/code-du-travail-modeles/src/simulators/preavis-licenciement/preavis-licenciement.data.json b/packages/code-du-travail-modeles/src/simulators/preavis-licenciement/preavis-licenciement.data.json
index ccb479e94d..b80cbf34a2 100644
--- a/packages/code-du-travail-modeles/src/simulators/preavis-licenciement/preavis-licenciement.data.json
+++ b/packages/code-du-travail-modeles/src/simulators/preavis-licenciement/preavis-licenciement.data.json
@@ -1348,7 +1348,7 @@
       "type": "préavis de Licenciement",
       "idcc": 843,
       "typeRupture": null,
-      "answer": "1.5 mois",
+      "answer": "1 mois et demi",
       "answer2": null,
       "answer3": "45",
       "ref": "Annexe : Statut du personnel d'encadrement, article 6",