diff --git a/datadir/scripts/smb-shares-size.nse b/datadir/scripts/smb-shares-size.nse
index 3e08504..68fc3c0 100644
--- a/datadir/scripts/smb-shares-size.nse
+++ b/datadir/scripts/smb-shares-size.nse
@@ -28,7 +28,7 @@ local stdnse    = require "stdnse"
 local smb       = require "smb"
 local smb2      = require "smb2"
 local msrpc     = require "msrpc"
-local string    = require "string"
+local bin       = require "bin"
 
 action = function(host)
   local status, shares, extra
@@ -76,7 +76,7 @@ function get_share_info(host, share)
   
   stdnse.debug1("SMB: Getting information for share: %s", path)
   
-  local status, err = send_transaction2(smbstate, TRANS2_QUERY_FS_INFORMATION, string.pack("<S", SMB_QUERY_FS_SIZE_INFO))
+  local status, err = send_transaction2(smbstate, TRANS2_QUERY_FS_INFORMATION, bin.pack("<S", SMB_QUERY_FS_SIZE_INFO))
   if ( not(status) ) then
     status, err      = smb.stop(smbstate)
     return false, "Failed to send data to server: send_transaction2"