diff -up ./src/validate.c.orig ./src/validate.c
--- ./src/validate.c.orig	2014-01-10 16:03:37.879499823 +0200
+++ ./src/validate.c	2014-01-10 16:04:02.438527324 +0200
@@ -363,7 +363,7 @@ static DesktopKeyDefinition registered_a
 };
 
 static const char *show_in_registered[] = {
-  "GNOME", "KDE", "LXDE", "MATE", "Razor", "ROX", "TDE", "Unity", "XFCE", "Old"
+  "GNOME", "KDE", "LXDE", "MATE", "Razor", "ROX", "TDE", "Unity", "XFCE", "Old", "OPENBOX"
 };
 
 static struct {