diff --git a/hw/xwin/winmultiwindowwindow.c b/hw/xwin/winmultiwindowwindow.c
index 4aca28930..24e226c51 100644
--- a/hw/xwin/winmultiwindowwindow.c
+++ b/hw/xwin/winmultiwindowwindow.c
@@ -1137,9 +1137,7 @@ winDestroyPixmapMultiwindow(PixmapPtr pPixmap)
     pPixmapPriv->pbmih = NULL;
 
     /* Free the pixmap memory */
-    free(pPixmap);
-    pPixmap = NULL;
-
+    FreePixmap(pPixmap);
     return TRUE;
 }