diff --git a/Client/cefweb/CWebApp.cpp b/Client/cefweb/CWebApp.cpp
index 64302d6a42..ed9fd0f55f 100644
--- a/Client/cefweb/CWebApp.cpp
+++ b/Client/cefweb/CWebApp.cpp
@@ -17,17 +17,11 @@
 #include <cef3/cef/include/wrapper/cef_stream_resource_handler.h>
 #include "CAjaxResourceHandler.h"
 #include "CWebAppAuth.h"  // IPC code generation
+#include "Wine.h"
 #include <cstdlib>
 
 namespace
 {
-    // Helper to detect Wine/Proton environment
-    bool IsRunningOnWine()
-    {
-        HMODULE hNtdll = GetModuleHandle("ntdll.dll");
-        return hNtdll && GetProcAddress(hNtdll, "wine_get_version");
-    }
-
     // Centralises command-line switch setup so both pre-launch callbacks stay in sync
     void ConfigureCommandLineSwitches(const CefRefPtr<CefCommandLine>& commandLine, const CefString& processType)
     {
@@ -89,7 +83,7 @@ namespace
         }
 
         // Wine/Proton compatibility: Allow GPU unless explicitly disabled or forced software
-        if (IsRunningOnWine())
+        if (Wine::IsRunningOnWine())
         {
             if (std::getenv("MTA_FORCE_SOFTWARE_RENDERING"))
             {
diff --git a/Client/loader/MainFunctions.cpp b/Client/loader/MainFunctions.cpp
index b79b443606..fceebc5d89 100644
--- a/Client/loader/MainFunctions.cpp
+++ b/Client/loader/MainFunctions.cpp
@@ -8,6 +8,7 @@
  *
  *****************************************************************************/
 
+#include "Wine.h"
 #include "MainFunctions.h"
 #include "Main.h"
 #include "Utils.h"
@@ -25,6 +26,7 @@
 #include <set>
 #include <string>
 #include <locale.h>
+#include <windows.h>
 #include <DbgHelp.h>
 #pragma comment(lib, "dbghelp.lib")
 
@@ -1215,6 +1217,12 @@ void ValidateGTAPath()
 //////////////////////////////////////////////////////////
 void CheckAntiVirusStatus()
 {
+    if (Wine::IsRunningOnWine())
+    {
+        WriteDebugEvent("Skipping AV check under Wine");
+        return;
+    }
+
     std::vector<SString> enabledList, disabledList;
     GetWMIAntiVirusStatus(enabledList, disabledList);
 
diff --git a/Client/sdk/Wine.h b/Client/sdk/Wine.h
new file mode 100644
index 0000000000..f03f7860f7
--- /dev/null
+++ b/Client/sdk/Wine.h
@@ -0,0 +1,33 @@
+/*****************************************************************************
+ *
+ *  PROJECT:     Multi Theft Auto
+ *  LICENSE:     See LICENSE in the top level directory
+ *  PURPOSE:     Wine/Proton detection utility
+ *
+ *  Multi Theft Auto is available from https://multitheftauto.com/
+ *
+ *****************************************************************************/
+
+#pragma once
+
+#include <windows.h>
+
+namespace Wine
+{
+    /////////////////////////////////////////////////////////
+    //
+    // IsRunningOnWine
+    //
+    // Detect if we are running under Wine/Proton
+    //
+    /////////////////////////////////////////////////////////
+    inline bool IsRunningOnWine()
+    {
+        HMODULE hNtdll = GetModuleHandleA("ntdll.dll");
+        if (!hNtdll)
+            return false;
+
+        FARPROC wineVersion = GetProcAddress(hNtdll, "wine_get_version");
+        return wineVersion != nullptr;
+    }
+}