diff --git a/perl/FKO/Makefile.PL b/perl/FKO/Makefile.PL
index b71ac53e..71ad692f 100644
--- a/perl/FKO/Makefile.PL
+++ b/perl/FKO/Makefile.PL
@@ -1,5 +1,5 @@
 use lib 'inc';
-use Devel::CheckLib;
+#use Devel::CheckLib;  ### maybe use for CPAN distribution?
 use 5.008008;
 use ExtUtils::MakeMaker;
 
@@ -19,10 +19,11 @@ my @libdirs = qw(
     ../../lib/.libs
 );
 
-check_lib_or_exit(
-    lib     => [qw( fko )],
-    libpath => \@libdirs
-);
+### uncomment for CPAN distribution?
+#check_lib_or_exit(
+#    lib     => [qw( fko )],
+#    libpath => \@libdirs
+#);
 
 WriteMakefile(
     NAME              => 'FKO',
diff --git a/perl/FKO/README b/perl/FKO/README
index 29b34cb5..100e2a25 100644
--- a/perl/FKO/README
+++ b/perl/FKO/README
@@ -25,6 +25,10 @@ This module requires these other modules and libraries:
 
 The Firewall Knock Operator library, "libfko".
 
+For a CPAN version of this module it may be advantageous to uncomment the
+Devel::Checklib lines in Makefile.PL, but this seems to introduce portability
+issues on FreeBSD.
+
 COPYRIGHT AND LICENCE
 
 Copyright (C) 2009 by Damien S. Stuart <dstuart@dstuart.org>