Index: Portfile
===================================================================
--- Portfile	(revision 40515)
+++ Portfile	(working copy)
@@ -54,7 +54,7 @@
 test.target     check
 
 post-activate {
-    system "xmlcatalog --noout --add system http://glade.gnome.org/glade-2.0.dtd ${prefix}/share/xml/libglade/glade-2.0.dtd ${prefix}/etc/xml/catalog"
+    system "xmlcatalog --create --noout --add system http://glade.gnome.org/glade-2.0.dtd ${prefix}/share/xml/libglade/glade-2.0.dtd ${prefix}/etc/xml/catalog"
 }
 
 livecheck.check regex