diff --git a/tests/unit-tests/security/identity-fixture.cpp b/tests/unit-tests/security/identity-fixture.cpp
index de67085..36f9c0b 100644
--- a/tests/unit-tests/security/identity-fixture.cpp
+++ b/tests/unit-tests/security/identity-fixture.cpp
@@ -55,7 +55,7 @@
       m_hasOldDefaultIdentity = false;
     }
 
-    m_newIdentity.set("/ndn-cxx-test-identity");
+    m_newIdentity = "/ndn-cxx-test-identity";
     m_newIdentity.appendVersion();
 
     // create the new identity and self-signed certificate