diff -ru3 ncurses-5.6/ncurses/base/lib_addch.c ncurses-5.6.mine/ncurses/base/lib_addch.c
--- ncurses-5.6/ncurses/base/lib_addch.c	2008-03-21 19:01:59.000000000 -0400
+++ ncurses-5.6.mine/ncurses/base/lib_addch.c	2008-03-21 18:59:01.000000000 -0400
@@ -217,7 +217,9 @@
 		       buffer,
 		       WINDOW_EXT(win, addch_used), &state)) > 0) {
 	attr_t attrs = AttrOf(CHDEREF(ch));
+	int pair = GetPair(CHDEREF(ch));
 	SetChar(CHDEREF(ch), result, attrs);
+	SetPair(CHDEREF(ch), pair);
 	WINDOW_EXT(win, addch_used) = 0;
     } else if (len == -1) {
 	/*