Update runtime files
diff --git a/runtime/synmenu.vim b/runtime/synmenu.vim
index 06e3725..dd191d8 100644
--- a/runtime/synmenu.vim
+++ b/runtime/synmenu.vim
@@ -13,6 +13,10 @@
     g:use_fvwm_2 = name == "fvwm2"
     filetype = "fvwm"
   endif
+  if name == "whitespace"
+    " do not replace the filetype but add whitespace on top
+    filetype = &ft .. ".whitespace"
+  endif
   if !exists("s:syntax_menu_synonly")
     exe "set ft=" .. filetype
     if exists("g:syntax_manual")