diff --git a/include/ndn-cpp/security/identity/identity-manager.hpp b/include/ndn-cpp/security/identity/identity-manager.hpp
index 08f0434..2dd9b6e 100644
--- a/include/ndn-cpp/security/identity/identity-manager.hpp
+++ b/include/ndn-cpp/security/identity/identity-manager.hpp
@@ -126,11 +126,7 @@
    * certificate the certificate to be added
    */
   void
-  addCertificateAsDefault(const Certificate& certificate)
-  {
-    identityStorage_->addCertificate(certificate);    
-    setDefaultCertificateForKey(certificate.getName());
-  }
+  addCertificateAsDefault(const Certificate& certificate);
 
   /**
    * Get a certificate with the specified name.