diff --git a/test/unittests/test_acc_certcheck.cpp b/test/unittests/test_acc_certcheck.cpp
index 8ae8dcf7..f51c034c 100644
--- a/test/unittests/test_acc_certcheck.cpp
+++ b/test/unittests/test_acc_certcheck.cpp
@@ -241,6 +241,8 @@ I/+4kAlXuAKdhsXohHeBhC2ijg/kTOMDxEbEVv+SkCIUyM+dB8UtlPKOH9HEL5Xi
 +BpDSqO6Bha5+NAVUU7OdDsnzRwSWaD6lwIBAgICAOE=
 -----END DH PARAMETERS-----)";
 
+static constexpr int debug_output = 0;
+
 static inline bool xfer_oneway(SslApiBuilder &sender, SslApiBuilder &recv, std::string out)
 {
     if (sender.get().read_ciphertext_ready())
@@ -283,12 +285,12 @@ static inline void xfer(AccHandshaker &cli, AccHandshaker &serv)
 
     do
     {
-        if (sdata)
+        if (sdata && debug_output)
             std::cout << "CLIENT <-- SERVER: " << sdata->size() << " bytes\n";
         cdata = cli.process_msg(sdata);
         try
         {
-            if (cdata)
+            if (cdata && debug_output)
                 std::cout << "CLIENT --> SERVER: " << cdata->size() << " bytes\n";
             sdata = serv.process_msg(cdata);
         }
@@ -319,6 +321,8 @@ SSLLib::SSLAPI::Config::Ptr CreateServerConfig(const std::string &pvtKey,
     config->load_cert(cert);
     config->load_private_key(pvtKey);
     config->load_ca(ca, false);
+    // Do not log extra data during unit test
+    config->set_debug_level(debug_output);
 
     return config;
 }
@@ -344,6 +348,9 @@ SSLLib::SSLAPI::Config::Ptr CreateClientConfig(const std::string &pvtKey,
     else
         config->load_ca(ca, false);
 
+    // Do not log extra data during unit test
+    config->set_debug_level(debug_output);
+
     return config;
 }
 
diff --git a/test/unittests/test_sslctx.cpp b/test/unittests/test_sslctx.cpp
index 7f962385..1396101b 100644
--- a/test/unittests/test_sslctx.cpp
+++ b/test/unittests/test_sslctx.cpp
@@ -247,6 +247,8 @@ I/+4kAlXuAKdhsXohHeBhC2ijg/kTOMDxEbEVv+SkCIUyM+dB8UtlPKOH9HEL5Xi
 TEST(sslctx_ut, create_config)
 {
     SSLLib::SSLAPI::Config::Ptr config = new SSLLib::SSLAPI::Config;
+    // Do not log extra data during unit test
+    config->set_debug_level(0);
     EXPECT_TRUE(config);
 }
 
@@ -263,6 +265,9 @@ TEST(sslctx_ut, config_new_factory_server)
     config->load_private_key(pvt_key_txt);
     config->load_ca(cert_txt, false);
 
+    // Do not log extra data during unit test
+    config->set_debug_level(0);
+
     auto factory_server = config->new_factory();
     EXPECT_TRUE(factory_server);
 
@@ -283,6 +288,9 @@ TEST(sslctx_ut, config_new_factory_client)
     config->load_private_key(pvt_key_txt);
     config->load_ca(cert_txt, false);
 
+    // Do not log extra data during unit test
+    config->set_debug_level(0);
+
     auto factory_client = config->new_factory();
     EXPECT_TRUE(factory_client);