diff --git a/pyRdfa/property.py b/pyRdfa/property.py
index 3f11e97..6ebc85f 100644
--- a/pyRdfa/property.py
+++ b/pyRdfa/property.py
@@ -15,8 +15,8 @@
 """
 
 """
-$Id: property.py,v 1.13 2013-07-26 12:35:51 ivan Exp $
-$Date: 2013-07-26 12:35:51 $
+$Id: property.py,v 1.14 2013-07-26 16:10:16 ivan Exp $
+$Date: 2013-07-26 16:10:16 $
 """
 
 import re, sys
diff --git a/pyRdfaExtras/__init__.py b/pyRdfaExtras/__init__.py
index b954b25..b4b4601 100644
--- a/pyRdfaExtras/__init__.py
+++ b/pyRdfaExtras/__init__.py
@@ -109,7 +109,8 @@ def _register_Turtle_serializer_2(self) :
 					 "pyRdfaExtras.serializers.turtleserializer", "TurtleSerializer")
 			MyGraph.turtle_serialzier_registered_2 = True
 			
-	def add(self, (s,p,o)) :
+	def add(self, t) :
+		s,p,o = t
 		"""Overriding the Graph's add method to filter out triples with possible None values. It may happen
 		in case, for example, a host language is not properly set up for the distiller"""
 		if s == None or p == None or o == None :