diff --git a/modules/exploits/windows/fileformat/winamp_maki_bof.rb b/modules/exploits/windows/fileformat/winamp_maki_bof.rb
index 930716677e..e62e764c9d 100644
--- a/modules/exploits/windows/fileformat/winamp_maki_bof.rb
+++ b/modules/exploits/windows/fileformat/winamp_maki_bof.rb
@@ -67,12 +67,10 @@ class Metasploit3 < Msf::Exploit::Remote
 			'Privileged'     => false,
 			'DisclosureDate' => 'May 20 2009',
 			'DefaultTarget'  => 0))
+	end
 
-		register_options(
-			[
-				OptString.new('FILENAME', [ false, 'The file name (do not change!)', 'mcvcore.maki']),
-			], self.class)
-
+	def file_format_filename
+		'mcvcore.maki'
 	end
 
 	def exploit
@@ -100,7 +98,7 @@ class Metasploit3 < Msf::Exploit::Remote
 		maki << types
 		maki << functions
 
-		print_status("Creating '#{datastore['FILENAME']}' file ...")
+		print_status("Creating '#{file_format_filename}' file ...")
 
 		file_create(maki)