diff --git a/deemix/downloader.py b/deemix/downloader.py
index e2daa84..ea9659c 100644
--- a/deemix/downloader.py
+++ b/deemix/downloader.py
@@ -105,8 +105,9 @@ def getPreferredBitrate(track, bitrate, shouldFallback, uuid=None, listener=None
         )
         try:
             request.raise_for_status()
-            track.filesizes[f"FILESIZE_{formatName}"] = request.headers["Content-Length"]
+            track.filesizes[f"FILESIZE_{formatName}"] = int(request.headers["Content-Length"])
             track.filesizes[f"FILESIZE_{formatName}_TESTED"] = True
+            if track.filesizes[f"FILESIZE_{formatName}"] == 0: return None
             return formatNumber
         except requests.exceptions.HTTPError: # if the format is not available, Deezer returns a 403 error
             return None
diff --git a/deemix/types/Track.py b/deemix/types/Track.py
index 5014601..85e359e 100644
--- a/deemix/types/Track.py
+++ b/deemix/types/Track.py
@@ -92,7 +92,7 @@ class Track:
         filesizes = {}
         for key, value in response.items():
             if key.startswith("FILESIZE_"):
-                filesizes[key] = value
+                filesizes[key] = int(value)
                 filesizes[key+"_TESTED"] = False
         self.filesizes = filesizes