diff --git a/etc/pam.conf b/etc/pam.conf
index a7c7f8a632c..2443f06067e 100644
--- a/etc/pam.conf
+++ b/etc/pam.conf
@@ -105,7 +105,7 @@ ftpd	auth	required	pam_nologin.so	no_warn
 #ftpd	auth	sufficient	pam_krb5.so	no_warn
 #ftpd	auth	sufficient	pam_ssh.so	no_warn try_first_pass
 ftpd	auth	required	pam_opie.so	no_warn
-#Auth pam_unix functionality handled internally
+#Auth pam_unix functionality handled internally and can't be chained
 #ftpd	account	required	pam_kerberosIV.so
 #ftpd	account	required	pam_krb5.so
 ftpd	account	required	pam_unix.so
diff --git a/etc/pam.d/ftpd b/etc/pam.d/ftpd
index a4056f501f3..809951b05e7 100644
--- a/etc/pam.d/ftpd
+++ b/etc/pam.d/ftpd
@@ -10,7 +10,7 @@ auth		required	pam_nologin.so	no_warn
 #auth		sufficient	pam_krb5.so	no_warn
 #auth           sufficient      pam_ssh.so      no_warn try_first_pass
 auth		required	pam_opie.so	no_warn
-# pam_unix functionality handled internally
+# pam_unix functionality handled internally and can't be chained
 
 # account
 #account	required	pam_kerberosIV.so