diff --git a/vcg/simplex/tetrahedron/pos.h b/vcg/simplex/tetrahedron/pos.h
index 14f9dfc0..6b5ce96a 100644
--- a/vcg/simplex/tetrahedron/pos.h
+++ b/vcg/simplex/tetrahedron/pos.h
@@ -144,7 +144,7 @@ public:
 	} 
 
   	/// Return the tetrahedron stored in the half edge
-	inline const TetraType* & T() const
+	inline  TetraType* const & T() const
 	{
 		return _t;
 	}