diff --git a/tests/unit-tests/file-manifest.t.cpp b/tests/unit-tests/file-manifest.t.cpp
index 226ae2b..80a344e 100644
--- a/tests/unit-tests/file-manifest.t.cpp
+++ b/tests/unit-tests/file-manifest.t.cpp
@@ -391,8 +391,7 @@
         BOOST_CHECK_NO_THROW(it->getFullName());
         BOOST_CHECK_EQUAL(it->data_packet_size(), dataPacketSize);
         BOOST_CHECK_EQUAL(it->catalog_prefix(), catalogPrefix);
-        auto block = it->wireEncode();
-        BOOST_CHECK_EQUAL(*it, FileManifest(block));
+        BOOST_CHECK_EQUAL(*it, FileManifest(it->wireEncode()));
         if (it != manifests.end() -1) {
           BOOST_CHECK_EQUAL(it->catalog().size(), subManifestSize);
           BOOST_CHECK_EQUAL(*(it->submanifest_ptr()), (it+1)->getFullName());