diff --git a/README.md b/README.md
index 6913714..8fd5e88 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,14 @@
-# TACT template project
+# TACT jetton demo
+
+![Jetton demo logo](https://ipfs.io/ipfs/QmbPZjC1tuP6ickCCBtoTCQ9gc3RpkbKx7C1LMYQdcLwti)
 
 This project has ready to use TACT compiler, typescript + jest with ton-contract-executor, example how to do tests.
+To run deployment of `jetton.tact` example on testnet, you need input your deployment wallet seed [here](https://github.com/Reveloper/tact-jetton/blob/main/sources/jetton.deploy.ts#L20) and owner address [here](https://github.com/Reveloper/tact-jetton/blob/main/sources/jetton.deploy.ts#L46).
 
 ```bash
 yarn test # To test contract
 yarn build # To build contract
-yarn deploy # To deploy contract
+yarn deploy # To deploy contract (need input deployment wallet)
 ```
 
 ## Licence
diff --git a/sources/jetton.deploy.ts b/sources/jetton.deploy.ts
index de5f4f0..0bb08ee 100644
--- a/sources/jetton.deploy.ts
+++ b/sources/jetton.deploy.ts
@@ -39,12 +39,12 @@ import {SampleJetton} from "./output/jetton_SampleJetton";
 
     const jettonParams = {
         name: "TactJet",
-        description: "Test tact contract - 4",
+        description: "This is description of Test tact jetton",
         image: "https://ipfs.io/ipfs/QmbPZjC1tuP6ickCCBtoTCQ9gc3RpkbKx7C1LMYQdcLwti" // Image url
     };
 
     // Owner should usually be the deploying wallet's address.
-    let owner = Address.parse('kQDND6yHEzKB82ZGRn58aY9Tt_69Ie_uz73e2VuuJ3fVVcxf');
+    let owner = Address.parse('kQDND6yHEzKB82ZGRn58aY9Tt_69Ie_u.............');
 
 
     // Create content Cell
diff --git a/sources/jetton.spec.ts b/sources/jetton.spec.ts
index 14cbde1..d15630d 100644
--- a/sources/jetton.spec.ts
+++ b/sources/jetton.spec.ts
@@ -1,4 +1,4 @@
-import { toNano, beginCell } from "ton-core";
+import { toNano, beginCell } from "ton";
 import { ContractSystem } from "ton-emulator";
 import {SampleJetton} from './output/jetton_SampleJetton';
 
@@ -9,8 +9,6 @@ describe('jetton', () => {
         let system = await ContractSystem.create();
         let owner = system.treasure('owner');
 
-        let content = beginCell().storeUint(1, 16).storeSlice('fff').endCell();
-
         let contract = system.open(await SampleJetton.fromInit(owner.address, null));
         let tracker = system.track(contract.address);