diff --git a/server/auth.local.test.ts b/server/auth.local.test.ts
index cb2a60a..af0fdd7 100644
--- a/server/auth.local.test.ts
+++ b/server/auth.local.test.ts
@@ -441,9 +441,15 @@ describe("masseSalariale", () => {
 describe("salaires.getSecurityStatus", () => {
   it("valide la clé de chiffrement configurée via une procédure administrateur", async () => {
     const { ctx } = createAuthCtx({ role: "admin" });
-
-    await expect(appRouter.createCaller(ctx).salaires.getSecurityStatus())
-      .resolves.toEqual({ ready: true, algorithm: "AES-256-GCM" });
+    const previousKey = process.env.PAYROLL_ENCRYPTION_KEY;
+    process.env.PAYROLL_ENCRYPTION_KEY = Buffer.alloc(32, 9).toString("base64");
+    try {
+      await expect(appRouter.createCaller(ctx).salaires.getSecurityStatus())
+        .resolves.toEqual({ ready: true, algorithm: "AES-256-GCM" });
+    } finally {
+      if (previousKey === undefined) delete process.env.PAYROLL_ENCRYPTION_KEY;
+      else process.env.PAYROLL_ENCRYPTION_KEY = previousKey;
+    }
   });
 
   it("interdit la sonde de sécurité aux profils non administrateurs", async () => {