diff --git a/packages/account-sdk/src/sign/base-account/Signer.ts b/packages/account-sdk/src/sign/base-account/Signer.ts
index 1cffe605..58ee5ad2 100644
--- a/packages/account-sdk/src/sign/base-account/Signer.ts
+++ b/packages/account-sdk/src/sign/base-account/Signer.ts
@@ -792,7 +792,7 @@ export class Signer {
           correlationId,
           errorMessage: parseErrorMessageFromAny(error),
         });
-        return standardErrors.provider.unauthorized(
+        throw standardErrors.provider.unauthorized(
           'failed to add sub account owner when sending request to sub account signer'
         );
       }