diff --git a/dll/win32/shell32/CDefView.cpp b/dll/win32/shell32/CDefView.cpp
index 95ccfa5973e..88b44611bd8 100644
--- a/dll/win32/shell32/CDefView.cpp
+++ b/dll/win32/shell32/CDefView.cpp
@@ -1504,10 +1504,16 @@ HRESULT CDefView::InvokeContextMenuCommand(CComPtr<IContextMenu> &pCM, UINT uCom
     cmi.hwnd = m_hWnd;
 
     if (GetKeyState(VK_SHIFT) & 0x8000)
+    {
         cmi.fMask |= CMIC_MASK_SHIFT_DOWN;
+        ::MessageBoxW(NULL, L"SHIFT pressed", L"Debug", MB_OK);
+    }
 
     if (GetKeyState(VK_CONTROL) & 0x8000)
+    {
         cmi.fMask |= CMIC_MASK_CONTROL_DOWN;
+        ::MessageBoxW(NULL, L"CTRL pressed", L"Debug", MB_OK);
+    }
 
     if (pt)
     {