diff --git a/Source/Core/WinUpdater/Main.cpp b/Source/Core/WinUpdater/Main.cpp
index caa9f40958..85b29e8226 100644
--- a/Source/Core/WinUpdater/Main.cpp
+++ b/Source/Core/WinUpdater/Main.cpp
@@ -31,7 +31,15 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
   // Test for write permissions
   bool need_admin = false;
 
-  FILE* test_fh = fopen("Updater.log", "w");
+  auto path = GetModuleName(hInstance);
+  if (!path)
+  {
+    UI::Error("Failed to get updater filename.");
+    return 1;
+  }
+
+  FILE* test_fh =
+      _wfopen((std::filesystem::path(*path).parent_path() / "Updater.log").c_str(), L"w");
 
   if (test_fh == nullptr)
     need_admin = true;
@@ -47,13 +55,6 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
       return 1;
     }
 
-    auto path = GetModuleName(hInstance);
-    if (!path)
-    {
-      MessageBox(nullptr, L"Failed to get updater filename.", L"Error", MB_ICONERROR);
-      return 1;
-    }
-
     // Relaunch the updater as administrator
     ShellExecuteW(nullptr, L"runas", path->c_str(), pCmdLine, NULL, SW_SHOW);
     return 0;