diff -r -up tk8.5.6/unix/tkUnixDefault.h tk8.5.6_lbjust/unix/tkUnixDefault.h
--- tk8.5.6/unix/tkUnixDefault.h	2007-12-13 08:28:50.000000000 -0700
+++ tk8.5.6_lbjust/unix/tkUnixDefault.h	2010-05-04 10:41:16.109366014 -0600
@@ -226,6 +226,7 @@
 #define DEF_LISTBOX_RELIEF		"sunken"
 #define DEF_LISTBOX_SCROLL_COMMAND	""
 #define DEF_LISTBOX_LIST_VARIABLE	""
+#define DEF_LISTBOX_JUSTIFY             "left"
 #define DEF_LISTBOX_SELECT_COLOR	SELECT_BG
 #define DEF_LISTBOX_SELECT_MONO		BLACK
 #define DEF_LISTBOX_SELECT_BD		"0"
