diff --git a/tests/unit-tests/security/v2/key-chain.t.cpp b/tests/unit-tests/security/v2/key-chain.t.cpp
index 950b97e..4eaf75e 100644
--- a/tests/unit-tests/security/v2/key-chain.t.cpp
+++ b/tests/unit-tests/security/v2/key-chain.t.cpp
@@ -228,8 +228,7 @@
   m_keyChain.addCertificate(key3, key3Cert1);
   BOOST_CHECK_EQUAL(key3.getCertificates().size(), 1);
   BOOST_REQUIRE_NO_THROW(key3.getDefaultCertificate());
-  // Overwrite the same cert again, should throw Pib::Error.
-  BOOST_REQUIRE_THROW(m_keyChain.addCertificate(key3, key3Cert1), Pib::Error);
+  m_keyChain.addCertificate(key3, key3Cert1); // overwriting the cert should work
   BOOST_CHECK_EQUAL(key3.getCertificates().size(), 1);
   // Add another cert
   Certificate key3Cert2 = key3Cert1;