diff --git a/index.js b/index.js
index c51b785..a5ea242 100644
--- a/index.js
+++ b/index.js
@@ -25,8 +25,11 @@ function sendMessage(message) {
 }
 
 async function compareAndSave(productsPrice) {
-  const productsPriceJson =
-    fs.readFileSync("productsPrice.json", "utf8") || "[]";
+  if (!fs.existsSync("productsPrice.json")) {
+    fs.writeFileSync("productsPrice.json", "[]");
+  }
+
+  const productsPriceJson = fs.readFileSync("productsPrice.json", "utf8");
   const oldProductsPrice = JSON.parse(productsPriceJson);
 
   const diffProducts = [];
@@ -139,7 +142,7 @@ async function init() {
 
   await compareAndSave(productsPrice);
 
-  console.log("Done! Check productsPrice.json");
+  console.log("Sprawdzone! Aktualne ceny zapisane w productsPrice.json");
 }
 
 sendMessage("Zaczynam monitoring cen");