diff --git a/doc/install-to-centos.rd b/doc/install-to-centos.rd
index 985333069..5bc64e009 100644
--- a/doc/install-to-centos.rd
+++ b/doc/install-to-centos.rd
@@ -178,11 +178,6 @@ After:
   autowhite 1w
   racl greylist default
 
-Create /etc/sysconfig/milter-greylist with the following
-content:
-
-  OPTIONS="$OPTIONS -p inet:11122@[127.0.0.1]"
-
 Start milter-greylist on startup:
 
   % sudo /sbin/chkconfig milter-greylist on
diff --git a/doc/install-to-centos.rd.ja b/doc/install-to-centos.rd.ja
index a2c604a81..2aff2619f 100644
--- a/doc/install-to-centos.rd.ja
+++ b/doc/install-to-centos.rd.ja
@@ -178,10 +178,6 @@ clamav-milterを起動します。
 # racl whitelist sm_macro "trusted_domain" spf pass
 # racl greylist sm_macro "trusted_domain" not spf pass
 
-次に、以下の内容の/etc/sysconfig/milter-greylistを作成します。
-
-  OPTIONS="$OPTIONS -p inet:11122@[127.0.0.1]"
-
 システム起動時にmilter-greylistを起動するようにします。
 
   % sudo /sbin/chkconfig milter-greylist on