diff --git a/packages/idos-sdk-server-dapp/src/idOS.ts b/packages/idos-sdk-server-dapp/src/idOS.ts
index e14637eaf..f71905ef6 100644
--- a/packages/idos-sdk-server-dapp/src/idOS.ts
+++ b/packages/idos-sdk-server-dapp/src/idOS.ts
@@ -31,7 +31,7 @@ export class idOS {
         grantee = await idOSGrantee.init({
           chainType,
           granteeSigner: signer,
-          encryptionPrivateKey: authnPrivateKey,
+          encryptionPrivateKey,
         });
         return new idOS(grantee);
       }