diff --git a/google-cloud-clients/google-cloud-core/src/test/java/com/google/cloud/ServiceOptionsTest.java b/google-cloud-clients/google-cloud-core/src/test/java/com/google/cloud/ServiceOptionsTest.java
index ee957a625f3c..55d90b6510ec 100644
--- a/google-cloud-clients/google-cloud-core/src/test/java/com/google/cloud/ServiceOptionsTest.java
+++ b/google-cloud-clients/google-cloud-core/src/test/java/com/google/cloud/ServiceOptionsTest.java
@@ -180,7 +180,7 @@ private TestServiceImpl(TestServiceOptions options) {
     }
   }
 
-  private interface TestServiceFactory extends ServiceFactory<TestService, TestServiceOptions> {}
+  public interface TestServiceFactory extends ServiceFactory<TestService, TestServiceOptions> {}
 
   private static class DefaultTestServiceFactory implements TestServiceFactory {
     private static final TestServiceFactory INSTANCE = new DefaultTestServiceFactory();
@@ -191,7 +191,7 @@ public TestService create(TestServiceOptions options) {
     }
   }
 
-  private interface TestServiceRpcFactory
+  public interface TestServiceRpcFactory
       extends ServiceRpcFactory<TestServiceOptions> {}
 
   private static class DefaultTestServiceRpcFactory implements TestServiceRpcFactory {