diff --git a/api/module/discovery/model/discovery.go b/api/module/discovery/model/discovery.go
index 83c9f11..d103e62 100644
--- a/api/module/discovery/model/discovery.go
+++ b/api/module/discovery/model/discovery.go
@@ -7,7 +7,7 @@ type DiscoveryZone struct {
 }
 
 type DiscoveryHost struct {
-	Zone Zone `json:"zone"`
+	Zone *Zone `json:"zone"`
 
 	FirstScanRange string   `json:"firstScanRange"`
 	LastScanRange  string   `json:"lastScanRange"`
@@ -17,7 +17,7 @@ type DiscoveryHost struct {
 }
 
 type DiscoveryPort struct {
-	Host Host `json:"host"`
+	Host *Host `json:"host"`
 
 	FirstScanRange int   `json:"firstScanRange"`
 	LastScanRange  int   `json:"lastScanRange"`
@@ -27,7 +27,7 @@ type DiscoveryPort struct {
 }
 
 type DiscoveryService struct {
-	Port Port `json:"port"`
+	Port *Port `json:"port"`
 
 	IncludeServices []string `json:"includeServices"`
 }