diff --git a/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/DistributedOFAgentStore.java b/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/DistributedOFAgentStore.java
index 7e41243..4dd6a2a 100644
--- a/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/DistributedOFAgentStore.java
+++ b/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/DistributedOFAgentStore.java
@@ -16,12 +16,6 @@
 package org.onosproject.ofagent.impl;
 
 import com.google.common.collect.ImmutableSet;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.KryoNamespace;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.CoreService;
@@ -41,6 +35,11 @@
 import org.onosproject.store.service.Serializer;
 import org.onosproject.store.service.StorageService;
 import org.onosproject.store.service.Versioned;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
 import org.slf4j.Logger;
 
 import java.util.Set;
@@ -51,15 +50,17 @@
 import static java.util.concurrent.Executors.newSingleThreadExecutor;
 import static org.onlab.util.Tools.groupedThreads;
 import static org.onosproject.ofagent.api.OFAgent.State.STARTED;
-import static org.onosproject.ofagent.api.OFAgentEvent.Type.*;
+import static org.onosproject.ofagent.api.OFAgentEvent.Type.OFAGENT_CONTROLLER_ADDED;
+import static org.onosproject.ofagent.api.OFAgentEvent.Type.OFAGENT_CONTROLLER_REMOVED;
+import static org.onosproject.ofagent.api.OFAgentEvent.Type.OFAGENT_STARTED;
+import static org.onosproject.ofagent.api.OFAgentEvent.Type.OFAGENT_STOPPED;
 import static org.onosproject.ofagent.api.OFAgentService.APPLICATION_NAME;
 import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * Implementation of the {@link OFAgentStore} with consistent map.
  */
-@Service
-@Component(immediate = true)
+@Component(immediate = true, service = OFAgentStore.class)
 public class DistributedOFAgentStore extends AbstractStore<OFAgentEvent, OFAgentStoreDelegate>
         implements OFAgentStore {
 
@@ -79,10 +80,10 @@
             .register(DefaultOFController.class)
             .build();
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected CoreService coreService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected StorageService storageService;
 
     private final ExecutorService eventExecutor = newSingleThreadExecutor(