diff --git a/Util/Config.cs b/Util/Config.cs
index 8ac0ace..8666a96 100644
--- a/Util/Config.cs
+++ b/Util/Config.cs
@@ -45,9 +45,13 @@ namespace EliteBGS.Util {
 
         public void SaveGlobal() {
             var serializer = JsonSerializer.CreateDefault();
-            using (var file = new StreamWriter(File.OpenWrite(config_file), Encoding.UTF8)) {
-                var stream = new JsonTextWriter(file);
-                serializer.Serialize(stream, global_config);
+            using (FileStream filestream = File.OpenWrite(config_file)) {
+                filestream.SetLength(0);
+                filestream.Flush();
+                using (StreamWriter file = new StreamWriter(filestream, Encoding.UTF8)) {
+                    var stream = new JsonTextWriter(file);
+                    serializer.Serialize(stream, global_config);
+                }
             }
         }