diff --git a/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java b/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java
index b612920d0c5..c5a538851d9 100644
--- a/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java
+++ b/plugin/src/test/java/org/elasticsearch/test/SecuritySettingsSource.java
@@ -142,9 +142,7 @@ public class SecuritySettingsSource extends ClusterDiscoveryConfiguration.Unicas
         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);
-        }
+        addDefaultSecurityTransportType(builder, superSettings);
 
         if (randomBoolean()) {
             builder.put(Security.USER_SETTING.getKey(),
@@ -156,6 +154,12 @@ public class SecuritySettingsSource extends ClusterDiscoveryConfiguration.Unicas
         return builder.build();
     }
 
+    protected void addDefaultSecurityTransportType(Settings.Builder builder, Settings settings) {
+        if (NetworkModule.TRANSPORT_TYPE_SETTING.exists(settings) == false) {
+            builder.put(NetworkModule.TRANSPORT_TYPE_SETTING.getKey(), Security.NAME4);
+        }
+    }
+
     @Override
     public Collection<Class<? extends Plugin>> nodePlugins() {
         return Arrays.asList(xpackPluginClass(),
diff --git a/plugin/src/test/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrailTests.java b/plugin/src/test/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrailTests.java
index fe9d1d1c0b0..ac1411f4cbf 100644
--- a/plugin/src/test/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrailTests.java
+++ b/plugin/src/test/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrailTests.java
@@ -165,6 +165,13 @@ public class IndexAuditTrailTests extends SecurityIntegTestCase {
                     return builder.build();
                 }
             }
+
+            @Override
+            protected void addDefaultSecurityTransportType(Settings.Builder builder, Settings settings) {
+                if (useSecurity) {
+                    super.addDefaultSecurityTransportType(builder, settings);
+                }
+            }
         };