--- doc/FAQ/bfnnconv.pl.orig	2019-10-14 23:33:30.375260525 +0900
+++ doc/FAQ/bfnnconv.pl	2019-10-14 23:33:55.564604234 +0900
@@ -61,7 +61,7 @@
 
 open(U,">$prefix.xrefdb-new");
 
-for $x (@outputs) { require("m-$x.pl"); }
+for $x (@outputs) { require("./m-$x.pl"); }
 
 &call('init');