diff --git a/src/gui/WndMain.cpp b/src/gui/WndMain.cpp
index f558cb88ec..2503bd9921 100644
--- a/src/gui/WndMain.cpp
+++ b/src/gui/WndMain.cpp
@@ -259,16 +259,19 @@ LRESULT CALLBACK WndMain::WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lP
     {
         case WM_CREATE:
         {
-						// Remove rounded corners from the render window on Windows 11
-						const DWM_WINDOW_CORNER_PREFERENCE corner_preference = DWMWCP_DONOTROUND;
-						DwmSetWindowAttribute(hwnd, DWMWA_WINDOW_CORNER_PREFERENCE, &corner_preference,
-																	sizeof(corner_preference));
-            // initialize menu
-            {
-                HMENU hMenu = LoadMenu(m_hInstance, MAKEINTRESOURCE(IDR_MAINMENU));
+						if (hwnd)
+						{
+							// Remove rounded corners from the render window on Windows 11
+							const DWM_WINDOW_CORNER_PREFERENCE corner_preference = DWMWCP_DONOTROUND;
+							DwmSetWindowAttribute(hwnd, DWMWA_WINDOW_CORNER_PREFERENCE, &corner_preference,
+																		sizeof(corner_preference));
+							// initialize menu
+							{
+									HMENU hMenu = LoadMenu(m_hInstance, MAKEINTRESOURCE(IDR_MAINMENU));
 
-                SetMenu(hwnd, hMenu);
-            }
+									SetMenu(hwnd, hMenu);
+							}
+						}
 
 			// Set window size to GUI dimensions
 			ResizeWindow(hwnd, /*bForGUI=*/true);