diff --git a/tests/unit-tests/model/ndn-block-header.t.cpp b/tests/unit-tests/model/ndn-block-header.t.cpp
index a8e10a9..5dc65f1 100644
--- a/tests/unit-tests/model/ndn-block-header.t.cpp
+++ b/tests/unit-tests/model/ndn-block-header.t.cpp
@@ -51,6 +51,7 @@
 {
   Interest interest("/prefix");
   interest.setNonce(10);
+  interest.setCanBePrefix(true);
   lp::Packet lpPacket(interest.wireEncode());
   nfd::face::Transport::Packet packet(lpPacket.wireEncode());
   BlockHeader header(packet);
@@ -91,6 +92,7 @@
 {
   Interest interest("/prefix");
   interest.setNonce(10);
+  interest.setCanBePrefix(true);
 
   lp::Packet lpPacket;
   lpPacket.add<::ndn::lp::SequenceField>(0); // to make sure that the NDNLP header is added