diff --git a/config.example.toml b/config.example.toml
index 6599ffe..fa47527 100644
--- a/config.example.toml
+++ b/config.example.toml
@@ -1,6 +1,5 @@
 threads = 4          # 下载线程数
 workers = 4          # 同时下载文件数
-
 [telegram]
 token = ""                                    # Bot Token
 admins = [777000]                             # 你的 user_id
diff --git a/config/viper.go b/config/viper.go
index e37cf3a..93f0a22 100644
--- a/config/viper.go
+++ b/config/viper.go
@@ -78,7 +78,7 @@ func Init() {
 
 	viper.SetDefault("threads", 3)
 	viper.SetDefault("workers", 3)
-	viper.SetDefault("chunk_size", 50*1024*1024)
+	viper.SetDefault("chunk_size", 1024*1024)
 
 	viper.SetDefault("temp.base_path", "cache/")
 	viper.SetDefault("temp.cache_ttl", 3600)