diff --git a/README.md b/README.md
index 248256b..f96d8ca 100644
--- a/README.md
+++ b/README.md
@@ -38,8 +38,6 @@ const assetOut: ApiTokenAddress = {
   address: 'EQCl0S4xvoeGeFGijTzicSA8j6GiiugmJW5zxQbZTUntre-1', // CES
 };
 
-const input_amount = 5; // 5 TON
-
 const route = await routingApi.buildRoute({
   input_token: assetIn,
   output_token: assetOut,
@@ -64,7 +62,7 @@ for (const transaction of transactions.data.transactions) {
 }
 
 await connector.sendTransaction({
-  validUntil: Date.now() + 5 * 60 * 1000,
+  validUntil: Math.floor(Date.now() / 1000) + 5 * 60,
   messages: messages,
 });
 
diff --git a/examples/swap.ts b/examples/swap.ts
index f5dc341..5f37d60 100644
--- a/examples/swap.ts
+++ b/examples/swap.ts
@@ -49,8 +49,6 @@ export async function swapAssets() {
     address: 'EQCl0S4xvoeGeFGijTzicSA8j6GiiugmJW5zxQbZTUntre-1', // CES
   };
 
-  const input_amount = 5; // 5 TON
-
   const route = await routingApi.buildRoute({
     input_token: assetIn,
     output_token: assetOut,
@@ -77,7 +75,7 @@ export async function swapAssets() {
   }
 
   await connector.sendTransaction({
-    validUntil: Date.now() + 5 * 60 * 1000,
+    validUntil: Math.floor(Date.now() / 1000) + 5 * 60,
     messages: messages,
   });