diff --git a/test/ndnSIM-serialization.cc b/test/ndnSIM-serialization.cc
index 2d42d93..1f1d2d6 100644
--- a/test/ndnSIM-serialization.cc
+++ b/test/ndnSIM-serialization.cc
@@ -82,6 +82,13 @@
   source.SetTimestamp (Seconds (100));
   NS_TEST_ASSERT_MSG_EQ (source.GetTimestamp (), Seconds (100), "set/get timestamp failed");
 
+  NS_TEST_ASSERT_MSG_EQ (source.GetSignature (), 0, "initialization of signature failed");
+  int size = source.GetSerializedSize ();  
+  source.SetSignature (10);
+  NS_TEST_ASSERT_MSG_EQ (source.GetSignature (), 10, "set/get signature failed");
+
+  NS_TEST_ASSERT_MSG_EQ (source.GetSerializedSize (), size + 4, "Signature size should have increased by 4");
+  
   Packet packet (0);
   //serialization
   packet.AddHeader (source);
@@ -93,6 +100,7 @@
   NS_TEST_ASSERT_MSG_EQ (source.GetName ()     , target.GetName ()     , "source/target name failed");
   NS_TEST_ASSERT_MSG_EQ (source.GetFreshness (), target.GetFreshness (), "source/target freshness failed");
   NS_TEST_ASSERT_MSG_EQ (source.GetTimestamp (), target.GetTimestamp (), "source/target timestamp failed");
+  NS_TEST_ASSERT_MSG_EQ (source.GetSignature (), target.GetSignature (), "source/target signature failed");
 }
 
 }