diff --git a/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java b/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java
index edbd1f7..240fa24 100644
--- a/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java
+++ b/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java
@@ -15,16 +15,6 @@
  */
 package org.onosproject.cluster.impl;
 
-import java.time.Instant;
-import java.util.Set;
-import java.util.concurrent.atomic.AtomicReference;
-
-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.apache.karaf.system.SystemService;
 import org.onlab.packet.IpAddress;
 import org.onosproject.cluster.ClusterAdminService;
@@ -42,8 +32,17 @@
 import org.onosproject.cluster.NodeId;
 import org.onosproject.core.Version;
 import org.onosproject.event.AbstractListenerManager;
+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.time.Instant;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicReference;
+
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onosproject.security.AppGuard.checkPermission;
@@ -53,8 +52,7 @@
 /**
  * Implementation of the cluster service.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = {ClusterService.class, ClusterAdminService.class})
 public class ClusterManager
         extends AbstractListenerManager<ClusterEvent, ClusterEventListener>
         implements ClusterService, ClusterAdminService {
@@ -65,10 +63,10 @@
 
     private ClusterStoreDelegate delegate = new InternalStoreDelegate();
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected ClusterStore store;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected SystemService systemService;
 
     private final AtomicReference<ClusterMetadata> currentMetadata = new AtomicReference<>();