diff --git a/pkgs/desktops/gnome-2.28/default.nix b/pkgs/desktops/gnome-2.28/default.nix
index f25a60642854..7a1e66a88908 100644
--- a/pkgs/desktops/gnome-2.28/default.nix
+++ b/pkgs/desktops/gnome-2.28/default.nix
@@ -12,6 +12,7 @@ rec {
 
   # !!! Missing! Need to add these.
   libgnomeprintui = throw "libgnomeprintui not implemented";
+  gnomepanel = throw "gnomepanel not implemented";
   gtksourceview_24 = gtksourceview;