diff --git a/tests/unit-tests/ca-module.t.cpp b/tests/unit-tests/ca-module.t.cpp
index a3fa150..b1d8777 100644
--- a/tests/unit-tests/ca-module.t.cpp
+++ b/tests/unit-tests/ca-module.t.cpp
@@ -38,8 +38,8 @@
 
 BOOST_AUTO_TEST_CASE(Initialization)
 {
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   BOOST_CHECK_EQUAL(ca.getCaConf().m_caName.toUri(), "/ndn");
 
   auto identity = addIdentity(Name("/ndn/site2"));
@@ -59,8 +59,8 @@
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
 
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   ca.setProbeHandler([&] (const JsonSection& probeInfo) {
       return "example";
     });
@@ -91,8 +91,8 @@
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
 
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   ca.setProbeHandler([&] (const JsonSection& probeInfo) {
       return "example";
     });
@@ -124,8 +124,8 @@
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
 
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   advanceClocks(time::milliseconds(20), 60);
 
   Interest interest("/ndn/CA/_PROBE");
@@ -153,8 +153,8 @@
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
 
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   advanceClocks(time::milliseconds(20), 60);
 
   ClientModule client(m_keyChain);
@@ -193,8 +193,8 @@
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
 
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   ca.m_config.m_probe = "email";
   advanceClocks(time::milliseconds(20), 60);
 
@@ -228,8 +228,8 @@
   auto key = identity.getDefaultKey();
   auto cert = key.getDefaultCertificate();
 
-  util::DummyClientFace face(m_io, {true, true});
-  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test");
+  util::DummyClientFace face(io, {true, true});
+  CaModule ca(face, m_keyChain, "tests/unit-tests/ca.conf.test", "ca-storage-memory");
   advanceClocks(time::milliseconds(20), 60);
 
   // generate NEW Interest