diff --git a/src/link_codes.ts b/src/link_codes.ts
index 37bd191..023baa0 100644
--- a/src/link_codes.ts
+++ b/src/link_codes.ts
@@ -1,12 +1,8 @@
 import { v4 as uuid } from 'uuid';
 
-export type AuthToken = {
-  value: string,
-  version: string
-}
 
 export type Association = {
-  authToken: AuthToken
+  authToken: string
   userId: string
   nickname: string  
 }
diff --git a/src/smapi.ts b/src/smapi.ts
index 04a7c79..db3d6c0 100644
--- a/src/smapi.ts
+++ b/src/smapi.ts
@@ -72,7 +72,7 @@ class SonosSoap {
       return {
         getDeviceAuthTokenResult: {
           authToken: association.authToken.value,
-          privateKey: association.authToken.version,
+          privateKey: "",
           userInfo: {
             nickname: association.nickname,
             userIdHashCode: crypto