diff --git a/src/telegram.js b/src/telegram.js
index 8f13bed..2f7f1b2 100644
--- a/src/telegram.js
+++ b/src/telegram.js
@@ -277,7 +277,7 @@ TelegramBot.prototype._formatSendData = function (type, data) {
     formData[type] = {
       value: data,
       options: {
-        filename: fileName,
+        filename: decodeURIComponent(fileName),
         contentType: mime.lookup(fileName)
       }
     };