--- bc-1.06/configure.in.ark	2008-01-11 10:38:23.000000000 +0000
+++ bc-1.06/configure.in	2008-01-11 10:38:33.000000000 +0000
@@ -68,7 +68,7 @@
 ])
 
 if test "$LEX" = "flex" ; then
- LEX="flex -I8"
+ LEX="flex -I -8"
 else
  if test "$bcrl" = "y" ; then
   AC_MSG_WARN(readline works only with flex.)