diff --git a/Tranga/TaskManager.cs b/Tranga/TaskManager.cs
index e60ccb6..e7b6c2f 100644
--- a/Tranga/TaskManager.cs
+++ b/Tranga/TaskManager.cs
@@ -271,6 +271,7 @@ public class TaskManager
 
         string exportPath = Path.Join(exportFolderPath, "data.json");
         string serializedData = JsonConvert.SerializeObject(data);
+        File.Delete(exportPath);
         File.WriteAllText(exportPath, serializedData);
     }