diff --git a/tests/unit-tests/client-module.t.cpp b/tests/unit-tests/client-module.t.cpp
index 638820f..888ad6b 100644
--- a/tests/unit-tests/client-module.t.cpp
+++ b/tests/unit-tests/client-module.t.cpp
@@ -61,7 +61,7 @@
   BOOST_CHECK(firstInterest->getName().at(-1).isParametersSha256Digest());
   // ignore the last name component (ParametersSha256Digest)
   BOOST_CHECK_EQUAL(firstInterest->getName().getPrefix(-1), "/site/CA/PROBE");
-  BOOST_CHECK_EQUAL(CaModule::jsonFromBlock(firstInterest->getApplicationParameters()).get<std::string>("email"),
+  BOOST_CHECK_EQUAL(readString(firstInterest->getApplicationParameters().get(tlv_parameter_value)),
                     "zhiyi@cs.ucla.edu");
 }