diff --git a/src/modules/registrypreview/RegistryPreviewUI/MainWindow.Utilities.cs b/src/modules/registrypreview/RegistryPreviewUI/MainWindow.Utilities.cs
index 16916ae882..4f85dcc051 100644
--- a/src/modules/registrypreview/RegistryPreviewUI/MainWindow.Utilities.cs
+++ b/src/modules/registrypreview/RegistryPreviewUI/MainWindow.Utilities.cs
@@ -800,7 +800,7 @@ namespace RegistryPreview
                 FileStreamOptions fileStreamOptions = new FileStreamOptions();
                 fileStreamOptions.Access = FileAccess.Write;
                 fileStreamOptions.Share = FileShare.Write;
-                fileStreamOptions.Mode = FileMode.OpenOrCreate;
+                fileStreamOptions.Mode = FileMode.Create;
 
                 fileStream = new FileStream(App.AppFilename, fileStreamOptions);
                 StreamWriter streamWriter = new StreamWriter(fileStream, System.Text.Encoding.Unicode);