diff --git a/Netch/Utils/Configuration.cs b/Netch/Utils/Configuration.cs
index 7fed7b36..81e312d9 100644
--- a/Netch/Utils/Configuration.cs
+++ b/Netch/Utils/Configuration.cs
@@ -75,7 +75,8 @@ namespace Netch.Utils
             if (!Directory.Exists(DataDirectoryFullName))
                 Directory.CreateDirectory(DataDirectoryFullName);
 
-            File.WriteAllBytes(SettingFileFullName, JsonSerializer.SerializeToUtf8Bytes(Global.Settings, JsonSerializerOptions));
+            using var fileStream = File.Create(SettingFileFullName);
+            JsonSerializer.SerializeAsync(fileStream, Global.Settings, JsonSerializerOptions).Wait();
         }
     }
 }
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