diff --git a/hw/xnest/Window.c b/hw/xnest/Window.c
index 3ba434f8b..0842069cc 100644
--- a/hw/xnest/Window.c
+++ b/hw/xnest/Window.c
@@ -269,11 +269,11 @@ xnestChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
 
     if (mask & XCB_CW_BACK_PIXMAP)
         switch (pWin->backgroundState) {
-        case None:
+        case XCB_BACK_PIXMAP_NONE:
             attributes.background_pixmap = None;
             break;
 
-        case ParentRelative:
+        case XCB_BACK_PIXMAP_PARENT_RELATIVE:
             attributes.background_pixmap = ParentRelative;
             break;