diff --git a/src/nlsr.cpp b/src/nlsr.cpp
index d4aa996..51bf86a 100644
--- a/src/nlsr.cpp
+++ b/src/nlsr.cpp
@@ -129,7 +129,7 @@
   m_adjacencyList.writeLog();
   m_namePrefixList.writeLog();
   /* Logging end */
-  intializeKey();
+  initializeKey();
   setStrategies();
   setInfoInterestFilter();
   setLsaInterestFilter();
@@ -143,11 +143,13 @@
 }
 
 void
-Nlsr::intializeKey()
+Nlsr::initializeKey()
 {
   m_defaultIdentity = m_confParam.getRouterPrefix();
   m_defaultIdentity.append("NLSR");
 
+  m_keyChain.deleteIdentity(m_defaultIdentity);
+
   ndn::Name keyName = m_keyChain.generateRsaKeyPairAsDefault(m_defaultIdentity, true);
 
   ndn::shared_ptr<ndn::IdentityCertificate> certificate = m_keyChain.selfSign(keyName);
diff --git a/src/nlsr.hpp b/src/nlsr.hpp
index b6b7ed6..bcfe95b 100644
--- a/src/nlsr.hpp
+++ b/src/nlsr.hpp
@@ -269,7 +269,7 @@
   initialize();
 
   void
-  intializeKey();
+  initializeKey();
 
   void
   loadValidator(boost::property_tree::ptree section,