diff --git a/model/ndn-common.h b/model/ndn-common.h
new file mode 100644
index 0000000..3581a4c
--- /dev/null
+++ b/model/ndn-common.h
@@ -0,0 +1,17 @@
+/** -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/* 
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Alexander Afanasyev
+ * 
+ * BSD license, See the doc/LICENSE file for more information
+ * 
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef NDN_COMMON_H
+#define NDN_COMMON_H
+
+#define NDN_NAMESPACE_BEGIN  namespace ns3 { namespace ndn {
+#define NDN_NAMESPACE_END    } /*ndn*/ } /*ns3*/ 
+
+#endif // NDN_COMMON_H