diff --git a/Gopkg.lock b/Gopkg.lock
index cb4a645..f0c5440 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -34,7 +34,7 @@
     "protocol/json",
     "registry"
   ]
-  revision = "1092f7a7ae44ef2f907579af217f1a594e48959c"
+  revision = "dcc3af07239b3f6fcbae3529bcb52c522b02053d"
 
 [[projects]]
   branch = "master"
diff --git a/internal/discoverer/discoverer.go b/internal/discoverer/discoverer.go
index dcf37b7..e359a54 100644
--- a/internal/discoverer/discoverer.go
+++ b/internal/discoverer/discoverer.go
@@ -43,6 +43,7 @@ func GetDiscoverer() Discoverer {
 type Discoverer interface {
 	Retain() chan *DiscoveryData
 	Release(dataChan chan *DiscoveryData)
+	Stop()
 	DiscoverZone(dataChan chan *DiscoveryData, dz *ocmd.DiscoverZone)
 	DiscoverHost(dataChan chan *DiscoveryData, zone *ocmd.Zone, dh *ocmd.DiscoverHost)
 	DiscoverPort(dataChan chan *DiscoveryData, host *ocmd.Host, dp *ocmd.DiscoverPort)
@@ -67,7 +68,7 @@ func (d *defaultDiscoverer) Release(dataChan chan *DiscoveryData) {
 	d.dataChanPool <- dataChan
 }
 
-func (d *defaultDiscoverer) Stop(dataChan chan *DiscoveryData) {
+func (d *defaultDiscoverer) Stop() {
 	if nil != d.stopChan {
 		close(d.stopChan)
 		d.stopChan = nil
diff --git a/internal/discoverer/discoverer_test.go b/internal/discoverer/discoverer_test.go
index 1d1a4b2..c552815 100644
--- a/internal/discoverer/discoverer_test.go
+++ b/internal/discoverer/discoverer_test.go
@@ -75,13 +75,13 @@ var (
 			"UNKNOWN",
 			"SSH",
 			"WMI",
-			"SNMP",
+			"SNMP V3",
 		},
 	}
 
 	dha = &ocmd.DiscoverHost{
-		FirstScanRangeV4: "192.168.1.1",
-		LastScanRangeV4:  "192.168.1.254",
+		FirstScanRangeV4: "192.168.1.0",
+		LastScanRangeV4:  "192.168.1.255",
 		DiscoverPort: &ocmd.DiscoverPort{
 			FirstScanRange: 1,
 			LastScanRange:  50000,
diff --git a/service/DiscoveryService.go b/service/DiscoveryService.go
index 68ae452..82bb9cb 100644
--- a/service/DiscoveryService.go
+++ b/service/DiscoveryService.go
@@ -85,7 +85,7 @@ func (s *DiscoveryService) DiscoverService(requesterID string, port *ocmd.Port,
 	return nil
 }
 
-func (s *DiscoveryService) StopRequest(requesterID string) error {
+func (s *DiscoveryService) StopDiscovery(requesterID string) error {
 	_stopChan, ok := s.pendingDiscovery.Load(requesterID)
 	if !ok {
 		return fmt.Errorf("discovery request for [%s] is not exist", requesterID)
@@ -152,6 +152,7 @@ func (s *DiscoveryService) handleDiscovery(requesterID string, discoveryFunc fun
 			}
 			data.Release()
 		case <-stopChan:
+			s.discoverer.Stop()
 			return nil
 		}
 	}