diff --git a/tests/identity-management-fixture.cpp b/tests/identity-management-fixture.cpp
index db99d5a..8ca0545 100644
--- a/tests/identity-management-fixture.cpp
+++ b/tests/identity-management-fixture.cpp
@@ -111,7 +111,7 @@
   certificate.setName(certificateName);
 
   // set metainfo
-  certificate.setContentType(tlv::ContentType_Key);
+  certificate.setContentType(ndn::tlv::ContentType_Key);
   certificate.setFreshnessPeriod(1_h);
 
   // set content