diff --git a/src/workers/GeoCaptchaSolver.js b/src/workers/GeoCaptchaSolver.js
index 1337916..0cc46ed 100644
--- a/src/workers/GeoCaptchaSolver.js
+++ b/src/workers/GeoCaptchaSolver.js
@@ -37,7 +37,7 @@ async function sendRequest(fileName, callback) {
     if (response.status === 200) {
         let result = response.data;
         console.log(result);
-        callback(result);
+        await callback(result);
         console.log("will delete wav file: " + fileName);
         await fs.unlink(fileName, (err) => {
             if (err) throw err;
@@ -45,7 +45,7 @@ async function sendRequest(fileName, callback) {
         })
     } else {
         console.log("error");
-        callback([]);
+        await callback([]);
         console.log("will delete wav file: " + fileName);
     }
 }