--- xdg_menu.old
+++ xdg_menu
@@ -74,7 +74,7 @@
 
 
         my $home = $ENV{"HOME"};
-        my $xdg_data_dirs = $ENV{"XDG_DATA_DIRS"};
+        my $xdg_data_dirs = $ENV{"XDG_DATA_DIRS"} || "/usr/local/share:/usr/share";
 
         my (@xdg_data_dirs);
         @xdg_data_dirs = split(":",$xdg_data_dirs);