diff --git a/src/win32_init.c b/src/win32_init.c
index c2dc1322..8704150c 100644
--- a/src/win32_init.c
+++ b/src/win32_init.c
@@ -378,7 +378,8 @@ static GLFWbool createHelperWindow(void)
     wc.hInstance     = _glfw.win32.instance;
     wc.lpszClassName = L"GLFW3 Helper";
 
-    if (!RegisterClassExW(&wc))
+    _glfw.win32.helperWindowClass = RegisterClassExW(&wc);
+    if (!_glfw.win32.helperWindowClass)
     {
         _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
                              "WIn32: Failed to register helper window class");
@@ -387,7 +388,7 @@ static GLFWbool createHelperWindow(void)
 
     _glfw.win32.helperWindowHandle =
         CreateWindowExW(WS_EX_OVERLAPPEDWINDOW,
-                        L"GLFW3 Helper",
+                        MAKEINTATOM(_glfw.win32.helperWindowClass),
                         L"GLFW message window",
                         WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
                         0, 0, 1, 1,
@@ -695,9 +696,6 @@ int _glfwInitWin32(void)
     else if (IsWindowsVistaOrGreater())
         SetProcessDPIAware();
 
-    if (!_glfwRegisterWindowClassWin32())
-        return GLFW_FALSE;
-
     if (!createHelperWindow())
         return GLFW_FALSE;
 
@@ -711,12 +709,11 @@ void _glfwTerminateWin32(void)
         UnregisterDeviceNotification(_glfw.win32.deviceNotificationHandle);
 
     if (_glfw.win32.helperWindowHandle)
-    {
         DestroyWindow(_glfw.win32.helperWindowHandle);
-        UnregisterClassW(L"GLFW3 Helper", _glfw.win32.instance);
-    }
-
-    _glfwUnregisterWindowClassWin32();
+    if (_glfw.win32.helperWindowClass)
+        UnregisterClassW(MAKEINTATOM(_glfw.win32.helperWindowClass), _glfw.win32.instance);
+    if (_glfw.win32.mainWindowClass)
+        UnregisterClassW(MAKEINTATOM(_glfw.win32.mainWindowClass), _glfw.win32.instance);
 
     _glfw_free(_glfw.win32.clipboardString);
     _glfw_free(_glfw.win32.rawInput);
diff --git a/src/win32_platform.h b/src/win32_platform.h
index c9d96cd0..c2158943 100644
--- a/src/win32_platform.h
+++ b/src/win32_platform.h
@@ -358,10 +358,6 @@ typedef struct VkWin32SurfaceCreateInfoKHR
 typedef VkResult (APIENTRY *PFN_vkCreateWin32SurfaceKHR)(VkInstance,const VkWin32SurfaceCreateInfoKHR*,const VkAllocationCallbacks*,VkSurfaceKHR*);
 typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR)(VkPhysicalDevice,uint32_t);
 
-#if !defined(_GLFW_WNDCLASSNAME)
- #define _GLFW_WNDCLASSNAME L"GLFW30"
-#endif
-
 #define GLFW_WIN32_WINDOW_STATE         _GLFWwindowWin32  win32;
 #define GLFW_WIN32_LIBRARY_WINDOW_STATE _GLFWlibraryWin32 win32;
 #define GLFW_WIN32_MONITOR_STATE        _GLFWmonitorWin32 win32;
@@ -444,6 +440,8 @@ typedef struct _GLFWlibraryWin32
 {
     HINSTANCE           instance;
     HWND                helperWindowHandle;
+    ATOM                helperWindowClass;
+    ATOM                mainWindowClass;
     HDEVNOTIFY          deviceNotificationHandle;
     int                 acquiredMonitorCount;
     char*               clipboardString;
@@ -527,9 +525,6 @@ GLFWbool _glfwConnectWin32(int platformID, _GLFWplatform* platform);
 int _glfwInitWin32(void);
 void _glfwTerminateWin32(void);
 
-GLFWbool _glfwRegisterWindowClassWin32(void);
-void _glfwUnregisterWindowClassWin32(void);
-
 WCHAR* _glfwCreateWideStringFromUTF8Win32(const char* source);
 char* _glfwCreateUTF8FromWideStringWin32(const WCHAR* source);
 BOOL _glfwIsWindowsVersionOrGreaterWin32(WORD major, WORD minor, WORD sp);
diff --git a/src/win32_window.c b/src/win32_window.c
index cefb2cf6..8d9c95e7 100644
--- a/src/win32_window.c
+++ b/src/win32_window.c
@@ -1249,6 +1249,39 @@ static int createNativeWindow(_GLFWwindow* window,
     DWORD style = getWindowStyle(window);
     DWORD exStyle = getWindowExStyle(window);
 
+    if (!_glfw.win32.mainWindowClass)
+    {
+        WNDCLASSEXW wc = { sizeof(wc) };
+        wc.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
+        wc.lpfnWndProc   = windowProc;
+        wc.hInstance     = _glfw.win32.instance;
+        wc.hCursor       = LoadCursorW(NULL, IDC_ARROW);
+#if defined(_GLFW_WNDCLASSNAME)
+        wc.lpszClassName = _GLFW_WNDCLASSNAME;
+#else
+        wc.lpszClassName = L"GLFW30";
+#endif
+        // Load user-provided icon if available
+        wc.hIcon = LoadImageW(GetModuleHandleW(NULL),
+                              L"GLFW_ICON", IMAGE_ICON,
+                              0, 0, LR_DEFAULTSIZE | LR_SHARED);
+        if (!wc.hIcon)
+        {
+            // No user-provided icon found, load default icon
+            wc.hIcon = LoadImageW(NULL,
+                                  IDI_APPLICATION, IMAGE_ICON,
+                                  0, 0, LR_DEFAULTSIZE | LR_SHARED);
+        }
+
+        _glfw.win32.mainWindowClass = RegisterClassExW(&wc);
+        if (!_glfw.win32.mainWindowClass)
+        {
+            _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
+                                 "Win32: Failed to register window class");
+            return GLFW_FALSE;
+        }
+    }
+
     if (window->monitor)
     {
         MONITORINFO mi = { sizeof(mi) };
@@ -1282,7 +1315,7 @@ static int createNativeWindow(_GLFWwindow* window,
         return GLFW_FALSE;
 
     window->win32.handle = CreateWindowExW(exStyle,
-                                           _GLFW_WNDCLASSNAME,
+                                           MAKEINTATOM(_glfw.win32.mainWindowClass),
                                            wideTitle,
                                            style,
                                            xpos, ypos,
@@ -1387,49 +1420,6 @@ static int createNativeWindow(_GLFWwindow* window,
     return GLFW_TRUE;
 }
 
-// Registers the GLFW window class
-//
-GLFWbool _glfwRegisterWindowClassWin32(void)
-{
-    WNDCLASSEXW wc;
-
-    ZeroMemory(&wc, sizeof(wc));
-    wc.cbSize        = sizeof(wc);
-    wc.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
-    wc.lpfnWndProc   = windowProc;
-    wc.hInstance     = _glfw.win32.instance;
-    wc.hCursor       = LoadCursorW(NULL, IDC_ARROW);
-    wc.lpszClassName = _GLFW_WNDCLASSNAME;
-
-    // Load user-provided icon if available
-    wc.hIcon = LoadImageW(GetModuleHandleW(NULL),
-                          L"GLFW_ICON", IMAGE_ICON,
-                          0, 0, LR_DEFAULTSIZE | LR_SHARED);
-    if (!wc.hIcon)
-    {
-        // No user-provided icon found, load default icon
-        wc.hIcon = LoadImageW(NULL,
-                              IDI_APPLICATION, IMAGE_ICON,
-                              0, 0, LR_DEFAULTSIZE | LR_SHARED);
-    }
-
-    if (!RegisterClassExW(&wc))
-    {
-        _glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
-                             "Win32: Failed to register window class");
-        return GLFW_FALSE;
-    }
-
-    return GLFW_TRUE;
-}
-
-// Unregisters the GLFW window class
-//
-void _glfwUnregisterWindowClassWin32(void)
-{
-    UnregisterClassW(_GLFW_WNDCLASSNAME, _glfw.win32.instance);
-}
-
 GLFWbool _glfwCreateWindowWin32(_GLFWwindow* window,
                                 const _GLFWwndconfig* wndconfig,
                                 const _GLFWctxconfig* ctxconfig,