--- zxfer.orig	2013-05-13 10:26:08.018070226 -0500
+++ zxfer	2013-05-13 10:26:37.498080210 -0500
@@ -174,7 +174,7 @@
 
 
 # Properties not supported on FreeBSD 8.2
-fbsd_readonly_properties="aclmode,aclinherit,devices,nbmand,shareiscsi,vscan,xattr"
+fbsd_readonly_properties="aclmode,aclinherit,devices,nbmand,shareiscsi,vscan,xattr,refcompressratio,written"
 
 # Properties not supported on Solaris Express 11
 solexp_readonly_properties="jailed,aclmode,shareiscsi"