diff --git a/extra/odict/odict.py b/extra/odict/odict.py
index 5cac3d1e2..18bf9c295 100644
--- a/extra/odict/odict.py
+++ b/extra/odict/odict.py
@@ -22,8 +22,6 @@ __author__ = ('Nicola Larosa <nico-NoSp@m-tekNico.net>,'
 
 __docformat__ = "restructuredtext en"
 
-__revision__ = '$Id$'
-
 __version__ = '0.2.2'
 
 __all__ = ['OrderedDict', 'SequenceOrderedDict']
diff --git a/tamper/appendnullbyte.py b/tamper/appendnullbyte.py
new file mode 100644
index 000000000..a433ef6ac
--- /dev/null
+++ b/tamper/appendnullbyte.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+
+"""
+$Id$
+
+Copyright (c) 2006-2011 sqlmap developers (http://sqlmap.sourceforge.net/)
+See the file 'doc/COPYING' for copying permission
+"""
+
+import string
+
+from lib.core.enums import PRIORITY
+
+__priority__ = PRIORITY.LOWEST
+
+def tamper(payload):
+    """
+    Appends encoded null byte character at the end of payload
+    Example: "AND 1=1" becomes "AND 1=1%00"
+    Reference: http://projects.webappsec.org/w/page/13246949/Null-Byte-Injection
+    """
+
+    retVal = payload
+
+    if payload:
+        retVal = "%s%%00" % payload
+
+    return retVal