diff --git a/reactos/subsystems/win32/win32k/ntuser/window.c b/reactos/subsystems/win32/win32k/ntuser/window.c
index ab285aa5cd5..7f4f55ab834 100644
--- a/reactos/subsystems/win32/win32k/ntuser/window.c
+++ b/reactos/subsystems/win32/win32k/ntuser/window.c
@@ -1149,7 +1149,8 @@ IntUnlinkWindow(PWINDOW_OBJECT Wnd)
       WndParent->FirstChild = Wnd->NextSibling;
 
    Wnd->PrevSibling = Wnd->NextSibling = Wnd->Parent = NULL;
-   Wnd->Wnd->Parent = NULL;
+   if (Wnd->Wnd)
+       Wnd->Wnd->Parent = NULL;
 }
 
 BOOL FASTCALL