diff --git a/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java b/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java
index 0a0db62..04c4f1c1 100644
--- a/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java
+++ b/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java
@@ -22,7 +22,6 @@
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
 import org.onosproject.net.provider.AbstractListenerProviderRegistry;
-import org.onosproject.core.Permission;
 import org.onosproject.event.Event;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.DeviceId;
@@ -51,6 +50,8 @@
 import static com.google.common.base.Preconditions.checkNotNull;
 import static org.onosproject.security.AppGuard.checkPermission;
 import static org.slf4j.LoggerFactory.getLogger;
+import static org.onosproject.security.AppPermission.Type.*;
+
 
 /**
  * Provides basic implementation of the topology SB &amp; NB APIs.
@@ -91,27 +92,27 @@
 
     @Override
     public Topology currentTopology() {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         return store.currentTopology();
     }
 
     @Override
     public boolean isLatest(Topology topology) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         return store.isLatest(topology);
     }
 
     @Override
     public Set<TopologyCluster> getClusters(Topology topology) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         return store.getClusters(topology);
     }
 
     @Override
     public TopologyCluster getCluster(Topology topology, ClusterId clusterId) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(topology, CLUSTER_ID_NULL);
         return store.getCluster(topology, clusterId);
@@ -119,7 +120,7 @@
 
     @Override
     public Set<DeviceId> getClusterDevices(Topology topology, TopologyCluster cluster) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(topology, CLUSTER_NULL);
         return store.getClusterDevices(topology, cluster);
@@ -127,7 +128,7 @@
 
     @Override
     public Set<Link> getClusterLinks(Topology topology, TopologyCluster cluster) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(topology, CLUSTER_NULL);
         return store.getClusterLinks(topology, cluster);
@@ -135,14 +136,14 @@
 
     @Override
     public TopologyGraph getGraph(Topology topology) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         return store.getGraph(topology);
     }
 
     @Override
     public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(src, DEVICE_ID_NULL);
         checkNotNull(dst, DEVICE_ID_NULL);
@@ -151,7 +152,7 @@
 
     @Override
     public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst, LinkWeight weight) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
 
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(src, DEVICE_ID_NULL);
@@ -162,7 +163,7 @@
 
     @Override
     public boolean isInfrastructure(Topology topology, ConnectPoint connectPoint) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(connectPoint, CONNECTION_POINT_NULL);
         return store.isInfrastructure(topology, connectPoint);
@@ -170,7 +171,7 @@
 
     @Override
     public boolean isBroadcastPoint(Topology topology, ConnectPoint connectPoint) {
-        checkPermission(Permission.TOPOLOGY_READ);
+        checkPermission(TOPOLOGY_READ);
         checkNotNull(topology, TOPOLOGY_NULL);
         checkNotNull(connectPoint, CONNECTION_POINT_NULL);
         return store.isBroadcastPoint(topology, connectPoint);