diff --git a/bin/server.dart b/bin/server.dart
index dbdfd9e..0e81fba 100644
--- a/bin/server.dart
+++ b/bin/server.dart
@@ -82,7 +82,7 @@ Future<void> _postOnMastodon(reqJson) async {
   final photoUrls = photos.map((photo) {
     final photoUrl = photo['photo']['sizes'].last['url'];
     final photoPath =
-        '${Directory.systemTemp.path}/${photoUrl.split('/').last}';
+        '${Directory.systemTemp.path}/${photoUrl.split('/').last.split('?').first}';
     dio.download(photoUrl, photoPath);
     return photoPath;
   });