diff --git a/HellIsUs/dllmain.cpp b/HellIsUs/dllmain.cpp
index 7ef719b..99da9ba 100644
--- a/HellIsUs/dllmain.cpp
+++ b/HellIsUs/dllmain.cpp
@@ -20,6 +20,7 @@ typedef float (*GetFloatFn)();
 typedef bool (*GetBoolFn)();
 
 static HMODULE fixLib = nullptr;
+static LONG g_coreInitialized = 0;
 static SetBoolFn SetFixEnabled = nullptr;
 static SetBoolFn SetFOVFixEnabled = nullptr;
 static SetBoolFn SetAspectRatioFixEnabled = nullptr;
@@ -72,33 +73,11 @@ const char* DONATION_URL = "https://buymeacoffee.com/k4sh44";
 // Scaling factor based on screen resolution
 float scale = 1.f;
 
-bool IsAlreadyInitialized()
-{
-    // Declare a lock
-    HANDLE hMap = OpenFileMappingA(FILE_MAP_ALL_ACCESS, FALSE, "Local\\HellisUsFixSharedSection");
-
-    // If lock is not yet initialized
-    if (hMap == nullptr)
-    {
-        // We create the lock only once
-        hMap = CreateFileMappingA(INVALID_HANDLE_VALUE, nullptr, PAGE_READWRITE, 0, 1, "Local\\HellisUsFixSharedSection");
-
-        if (hMap == nullptr) // We ensure the lock is valid
-            return true;
-
-        return false; // First time created we return false
-    }
-
-    // Otherwise we return true
-    CloseHandle(hMap);
-    return true;
-}
-
 // Load and unload game core dll functions /!\ necessary
 static void LoadFixDLL()
 {
-    if (IsAlreadyInitialized())
-        return; // déjà lancé dans un autre chargement
+    if (InterlockedCompareExchange(&g_coreInitialized, 1, 0) != 0)
+        return;
 
     if (GetModuleHandleA("HellIsUsCore.dll") == nullptr) {
         fixLib = LoadLibraryA("HellIsUsCore.dll");