diff --git a/collects/meta/drdr/plt-build.ss b/collects/meta/drdr/plt-build.ss
index 969f45fd7f..165a548dd3 100644
--- a/collects/meta/drdr/plt-build.ss
+++ b/collects/meta/drdr/plt-build.ss
@@ -304,7 +304,7 @@
                        (safely-delete-directory (format "/tmp/.tX~a-lock" i))
                        (safely-delete-directory (build-path tmp-dir (format ".tX~a-lock" i)))
                        (with-running-program
-                           (Xvfb-path) (list (format ":~a" i) "-screen" "0" "800x600x24" "-ac" "-br" "-bs" "-kb")
+                           (Xvfb-path) (list (format ":~a" i) "-screen" "0" "800x600x24" "-ac" "-br" "-bs" "-kb" "+extension" "RANDR")
                          (lambda ()
                            (with-running-program
                                (fluxbox-path) (list "-display" (format ":~a" i) "-rc" "/home/jay/.fluxbox/init")
diff --git a/collects/meta/props b/collects/meta/props
index 0af804d0dc..8c421d0941 100755
--- a/collects/meta/props
+++ b/collects/meta/props
@@ -1032,6 +1032,8 @@ path/s is either such a string or a list of them.
 "collects/mred/private/path-dialog.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/mred/private/repl.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/mred/private/snipfile.rkt" drdr:command-line (gracket-text "-t" *)
+"collects/mred/private/wx/cocoa" drdr:command-line #f
+"collects/mred/private/wx/win32" drdr:command-line #f
 "collects/mred/private/wx.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/mred/private/wxcanvas.rkt" drdr:command-line (gracket-text "-t" *)
 "collects/mred/private/wxcontainer.rkt" drdr:command-line (gracket-text "-t" *)