diff --git a/tck/src/main/java/org/eclipse/microprofile/config/tck/broken/ConfigObserver.java b/tck/src/main/java/org/eclipse/microprofile/config/tck/broken/ConfigObserver.java
index 5ad57dad..54f41a8d 100644
--- a/tck/src/main/java/org/eclipse/microprofile/config/tck/broken/ConfigObserver.java
+++ b/tck/src/main/java/org/eclipse/microprofile/config/tck/broken/ConfigObserver.java
@@ -34,13 +34,9 @@
  * @see MissingValueOnObserverMethodInjectionTest
  */
 @ApplicationScoped
-final class ConfigObserver {
+public class ConfigObserver {
 
-    private ConfigObserver() {
-        super();
-    }
-
-    private static final void onStartup(@Observes @Initialized(ApplicationScoped.class) final Object event,
+    public void onStartup(@Observes @Initialized(ApplicationScoped.class) final Object event,
             @ConfigProperty(name = "this.property.does.not.exist") final String nonExistentConfigurationPropertyValue) {
     }