diff -uNr old-desktop-file-utils-0.15//src/validate.c desktop-file-utils-0.15/src/validate.c
--- old-desktop-file-utils-0.15//src/validate.c	2008-02-05 13:06:11.000000000 +0100
+++ desktop-file-utils-0.15/src/validate.c	2009-12-13 18:00:29.480228379 +0100
@@ -324,7 +324,7 @@
 };
 
 static const char *show_in_registered[] = {
-  "KDE", "GNOME", "ROX", "XFCE", "Old"
+  "KDE", "GNOME", "LXDE", "ROX", "XFCE", "Old"
 };
 
 static const char *main_categories_registered[] = {