diff --git a/src/telegram-mini-app.js b/src/telegram-mini-app.js
index 9713c82..533b56b 100644
--- a/src/telegram-mini-app.js
+++ b/src/telegram-mini-app.js
@@ -64,7 +64,7 @@ export function validateTelegramMiniAppInitData(initDataRaw) {
   }
 
   const checkEntries = [...params.entries()]
-    .filter(([key]) => key !== 'hash' && key !== 'signature')
+    .filter(([key]) => key !== 'hash')
     .sort(([leftKey], [rightKey]) => leftKey.localeCompare(rightKey))
     .map(([key, value]) => `${key}=${value}`);
   const dataCheckString = checkEntries.join('\n');