diff -p -up mutt-1.5.18/doc/Muttrc.head.urlview mutt-1.5.18/doc/Muttrc.head
--- mutt-1.5.18/doc/Muttrc.head.urlview	2008-01-30 02:26:50.000000000 -0200
+++ mutt-1.5.18/doc/Muttrc.head	2008-07-05 22:24:20.000000000 -0300
@@ -13,7 +13,7 @@ macro index \eb "<search>~b " "search in
 # simulate the old url menu
 macro index,pager,attach,compose \cb "\
 <enter-command> set my_pipe_decode=\$pipe_decode pipe_decode<Enter>\
-<pipe-message> urlview<Enter>\
+<pipe-message> ([ -x /usr/bin/urlview ] && urlview || echo \"Please install the urlview package\")<Enter>\
 <enter-command> set pipe_decode=\$my_pipe_decode; unset my_pipe_decode<Enter>" \
 "call urlview to extract URLs out of a message"