diff --git a/core/net/src/main/java/org/onosproject/net/region/impl/RegionManager.java b/core/net/src/main/java/org/onosproject/net/region/impl/RegionManager.java
index b988021..75d96ed 100644
--- a/core/net/src/main/java/org/onosproject/net/region/impl/RegionManager.java
+++ b/core/net/src/main/java/org/onosproject/net/region/impl/RegionManager.java
@@ -25,9 +25,7 @@
 import org.onosproject.cluster.NodeId;
 import org.onosproject.event.AbstractListenerManager;
 import org.onosproject.net.DeviceId;
-import org.onosproject.net.Host;
 import org.onosproject.net.HostId;
-import org.onosproject.net.host.HostService;
 import org.onosproject.net.region.Region;
 import org.onosproject.net.region.RegionAdminService;
 import org.onosproject.net.region.RegionEvent;
@@ -39,17 +37,15 @@
 import org.slf4j.Logger;
 
 import java.util.Collection;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-import java.util.stream.Collectors;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 import static com.google.common.base.Preconditions.checkState;
 import static com.google.common.collect.ImmutableList.of;
+import static org.slf4j.LoggerFactory.getLogger;
 import static org.onosproject.security.AppGuard.checkPermission;
 import static org.onosproject.security.AppPermission.Type.REGION_READ;
-import static org.slf4j.LoggerFactory.getLogger;
 
 /**
  * Provides implementation of the region service APIs.
@@ -73,9 +69,6 @@
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected RegionStore store;
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
-    protected HostService hostService;
-
     @Activate
     public void activate() {
         store.setDelegate(delegate);
@@ -161,14 +154,7 @@
     public Set<HostId> getRegionHosts(RegionId regionId) {
         checkPermission(REGION_READ);
         checkNotNull(regionId, REGION_ID_NULL);
-        Set<DeviceId> devs = getRegionDevices(regionId);
-        Set<HostId> hostIds = new HashSet<>();
-        for (DeviceId d : devs) {
-            Set<HostId> ids = hostService.getConnectedHosts(d).stream()
-                    .map(Host::id)
-                    .collect(Collectors.toSet());
-            hostIds.addAll(ids);
-        }
-        return hostIds;
+        return store.getRegionHosts(regionId);
     }
+
 }