diff --git a/README.md b/README.md
index 1125149..35432b7 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # ledger-cosmos-js
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![npm version](https://badge.fury.io/js/ledger-cosmos-js.svg)](https://badge.fury.io/js/ledger-cosmos-js)
+[![CircleCI](https://circleci.com/gh/ZondaX/cosmos-delegation-js/tree/master.svg?style=shield)](https://circleci.com/gh/ZondaX/cosmos-delegation-js/tree/master)
 
 This package provides a basic client library to communicate with a Tendermint/Cosmos App running in a Ledger Nano S/X
 
diff --git a/tests/basic.ispec.js b/tests/basic.ispec.js
index c193138..ea59ddd 100644
--- a/tests/basic.ispec.js
+++ b/tests/basic.ispec.js
@@ -182,17 +182,8 @@ test('sign_big_tx', async () => {
 
     expect(response_pk.return_code).toEqual(0x9000);
     expect(response_pk.error_message).toEqual('No errors');
-    expect(response_sign.return_code).toEqual(0x9000);
-    expect(response_sign.error_message).toEqual('No errors');
-
-    // Check signature is valid
-    const hash = crypto.createHash('sha256');
-    let msg_hash = hash.update(message).digest();
-
-    let signature_der = response_sign.signature;
-    let signature = secp256k1.signatureImport(signature_der);
-    let signature_ok = secp256k1.verify(msg_hash, signature, response_pk.compressed_pk);
-    expect(signature_ok).toEqual(true);
+    expect(response_sign.return_code).toEqual(0x6A80);
+    expect(response_sign.error_message).toEqual('NOMEM: JSON string contains too many tokens');
 });