diff --git a/g5k-postinstall b/g5k-postinstall
index 6f277ea64bced6e53235802d927c1ca7a280ac07..9611a0e0f30464237d3dc1fdbeca4385f316be53 100755
--- a/g5k-postinstall
+++ b/g5k-postinstall
@@ -73,12 +73,11 @@ Example: --net debian-bridged,traditional-names,hpc
 Valid tags for filesystems configuration in fstab:
   nfs            include generic NFS mounts (/home with autofs, /grid5000)
   no-autofs      do not use autofs, just mount the user's NFS directory
-  site-specific  include site-specific NFS mounts (e.g. /softs)
   no-uuid        do not use filesystem UUID to identify the partitions, use the
                  block device filenames
   custom         include custom mounts for custom partitionning. Need fstab
                  file included in postinstall archive.
-Example: --fstab nfs,site-specific
+Example: --fstab nfs
 
 Valid modes for user restriction:
   std         if deployed on production partition, restrict to root,oar. else,
@@ -475,6 +474,7 @@ end
 ########################### fstab #####################################
 
 $logger.info("Writing /etc/fstab (spec: #{$fstab.join(',')})")
+#site-specific is not used anymore but we keep it for backwards compatibility
 fstab_bad = ( $fstab - [ 'nfs', 'no-autofs', 'site-specific', 'no-uuid', 'custom' ])
 raise("Unknown fstab mode: #{fstab_bad.join(',')}") unless fstab_bad.empty?
 
@@ -524,14 +524,6 @@ nfs:/export/grid5000  /grid5000 nfs #{$nfs_mount_options} 0 0
       EOF
     end
 
-    # FIXME also convert to UUID....
-    if $fstab.include?('site-specific') and MOUNTPOINTS[$mysite] != nil
-      fd.puts
-      fd.puts MOUNTPOINTS[$mysite]['fstab']
-      MOUNTPOINTS[$mysite]['dirs'].each do |d|
-        FileUtils::mkdir_p("#{DSTDIR}#{d}")
-      end
-    end
     # FIXME also update NFS options there...
     if $fstab.include?('nfs') and $fstab.include?('no-autofs')
       user = get_node_current_user($mysite, $mycluster, $host)