diff --git a/net/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleHostManager.java b/net/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleHostManager.java
index 0c0c983..c9aa71b 100644
--- a/net/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleHostManager.java
+++ b/net/core/trivial/src/main/java/org/onlab/onos/net/trivial/impl/SimpleHostManager.java
@@ -6,15 +6,15 @@
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
-import org.onlab.onos.event.AbstractListenerManager;
-import org.onlab.onos.event.EventDispatchService;
+import org.onlab.onos.event.AbstractListenerRegistry;
+import org.onlab.onos.event.EventDeliveryService;
 import org.onlab.onos.net.host.HostDescription;
 import org.onlab.onos.net.host.HostEvent;
 import org.onlab.onos.net.host.HostListener;
 import org.onlab.onos.net.host.HostProvider;
-import org.onlab.onos.net.host.HostProviderBroker;
+import org.onlab.onos.net.host.HostProviderRegistry;
 import org.onlab.onos.net.host.HostProviderService;
-import org.onlab.onos.net.provider.AbstractProviderBroker;
+import org.onlab.onos.net.provider.AbstractProviderRegistry;
 import org.onlab.onos.net.provider.AbstractProviderService;
 import org.slf4j.Logger;
 
@@ -26,21 +26,21 @@
 @Component(immediate = true)
 @Service
 public class SimpleHostManager
-        extends AbstractProviderBroker<HostProvider, HostProviderService>
-        implements HostProviderBroker {
+        extends AbstractProviderRegistry<HostProvider, HostProviderService>
+        implements HostProviderRegistry {
 
     private final Logger log = getLogger(getClass());
 
-    private final AbstractListenerManager<HostEvent, HostListener>
-            listenerManager = new AbstractListenerManager<>();
+    private final AbstractListenerRegistry<HostEvent, HostListener>
+            listenerRegistry = new AbstractListenerRegistry<>();
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
-    private EventDispatchService eventDispatcher;
+    private EventDeliveryService eventDispatcher;
 
 
     @Activate
     public void activate() {
-        eventDispatcher.addSink(HostEvent.class, listenerManager);
+        eventDispatcher.addSink(HostEvent.class, listenerRegistry);
         log.info("Started");
     }