diff --git a/src/MaaWpfGui/Main/Bootstrapper.cs b/src/MaaWpfGui/Main/Bootstrapper.cs
index de99a6978b..6f418d2163 100644
--- a/src/MaaWpfGui/Main/Bootstrapper.cs
+++ b/src/MaaWpfGui/Main/Bootstrapper.cs
@@ -82,10 +82,10 @@ namespace MaaWpfGui.Main
             {
                 if (File.Exists(logBakFilename))
                 {
-                    Directory.Delete(logBakFilename);
+                    File.Delete(logBakFilename);
                 }
 
-                Directory.Move(logFilename, logBakFilename);
+                File.Move(logFilename, logBakFilename);
             }
 
             // Bootstrap serilog