--- configure.orig	2014-01-15 15:12:44.000000000 +0000
+++ configure
@@ -1805,10 +1805,8 @@ if test "$vi_cv_canna" = "yes"; then
 		case "$host_os" in
 		bsdi2.1)
 			vi_cannapath="/usr/contrib/canna";;
-		freebsd2.2*|freebsd3*)
-			vi_cannapath="/usr/local";;
-		freebsd2*)
-			vi_cannapath="/usr/local/canna";;
+		freebsd*|dragonfly*)
+			vi_cannapath="${prefix}";;
 		*)
 			vi_cannapath="/usr/local/canna";;
 		esac