diff --git a/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java b/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java
index 7cb9f80d8ad..b612920d0c5 100644
--- a/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java
+++ b/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java
@@ -9,6 +9,7 @@ import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.analysis.common.CommonAnalysisPlugin;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.io.PathUtils;
+import org.elasticsearch.common.network.NetworkModule;
 import org.elasticsearch.common.settings.MockSecureSettings;
 import org.elasticsearch.common.settings.SecureSettings;
 import org.elasticsearch.common.settings.SecureString;
@@ -138,8 +139,13 @@ public class SecuritySettingsSource extends ClusterDiscoveryConfiguration.Unicas
 
     @Override
     public Settings transportClientSettings() {
-        Settings.Builder builder = Settings.builder().put(super.transportClientSettings());
+        Settings superSettings = super.transportClientSettings();
+        Settings.Builder builder = Settings.builder().put(superSettings);
         addClientSSLSettings(builder, "");
+        if (NetworkModule.TRANSPORT_TYPE_SETTING.exists(superSettings) == false) {
+            builder.put(NetworkModule.TRANSPORT_TYPE_SETTING.getKey(), Security.NAME4);
+        }
+
         if (randomBoolean()) {
             builder.put(Security.USER_SETTING.getKey(),
                     transportClientUsername() + ":" + new String(transportClientPassword().getChars()));
diff --git a/plugin/src/test/java/org/elasticsearch/xpack/security/rest/action/RestAuthenticateActionTests.java b/plugin/src/test/java/org/elasticsearch/xpack/security/rest/action/RestAuthenticateActionTests.java
index c58a2e1d700..e63227e3ee9 100644
--- a/plugin/src/test/java/org/elasticsearch/xpack/security/rest/action/RestAuthenticateActionTests.java
+++ b/plugin/src/test/java/org/elasticsearch/xpack/security/rest/action/RestAuthenticateActionTests.java
@@ -56,7 +56,7 @@ public class RestAuthenticateActionTests extends SecurityIntegTestCase {
         ObjectPath objectPath = ObjectPath.createFromResponse(response);
         assertThat(objectPath.evaluate("username").toString(), equalTo(SecuritySettingsSource.TEST_USER_NAME));
         @SuppressWarnings("unchecked")
-        List<String> roles = (List<String>) objectPath.evaluate("roles");
+        List<String> roles = objectPath.evaluate("roles");
         assertThat(roles.size(), is(1));
         assertThat(roles, contains(SecuritySettingsSource.TEST_ROLE));
     }