diff --git a/core/net/src/main/java/org/onosproject/net/topology/impl/PathManager.java b/core/net/src/main/java/org/onosproject/net/topology/impl/PathManager.java
index cc9cc53..c5d7392 100644
--- a/core/net/src/main/java/org/onosproject/net/topology/impl/PathManager.java
+++ b/core/net/src/main/java/org/onosproject/net/topology/impl/PathManager.java
@@ -15,47 +15,44 @@
  */
 package org.onosproject.net.topology.impl;
 
-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.onosproject.net.DisjointPath;
 import org.onosproject.net.ElementId;
 import org.onosproject.net.Link;
 import org.onosproject.net.Path;
 import org.onosproject.net.host.HostService;
+import org.onosproject.net.topology.AbstractPathService;
 import org.onosproject.net.topology.LinkWeigher;
 import org.onosproject.net.topology.PathService;
 import org.onosproject.net.topology.TopologyService;
-import org.onosproject.net.topology.AbstractPathService;
+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.Map;
 import java.util.Set;
 import java.util.stream.Stream;
-import java.util.Map;
 
-
-import static org.slf4j.LoggerFactory.getLogger;
 import static org.onosproject.security.AppGuard.checkPermission;
-import static org.onosproject.security.AppPermission.Type.*;
+import static org.onosproject.security.AppPermission.Type.TOPOLOGY_READ;
+import static org.slf4j.LoggerFactory.getLogger;
 
 
 /**
  * Provides implementation of a path selection service atop the current
  * topology and host services.
  */
-@Component(immediate = true)
-@Service
+@Component(immediate = true, service = PathService.class)
 public class PathManager extends AbstractPathService implements PathService {
 
     private final Logger log = getLogger(getClass());
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected TopologyService topologyService;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
     protected HostService hostService;
 
     @Activate