diff --git a/src/security/identity/identity-manager.cpp b/src/security/identity/identity-manager.cpp
index 90bc043..10168d1 100644
--- a/src/security/identity/identity-manager.cpp
+++ b/src/security/identity/identity-manager.cpp
@@ -220,7 +220,7 @@
   DigestAlgorithm digestAlgorithm = DIGEST_ALGORITHM_SHA256;
     
   signature->getKeyLocator().setType(ndn_KeyLocatorType_KEYNAME);
-  signature->getKeyLocator().setKeyName(certificateName);
+  signature->getKeyLocator().setKeyName(certificateName.getPrefix(-1));
   // Omit the certificate digest.
   signature->getKeyLocator().setKeyNameType((ndn_KeyNameType)-1);
   // Ignore witness and leave the digestAlgorithm as the default.