diff --git a/pkg/apis/flagger/v1alpha3/types.go b/pkg/apis/flagger/v1alpha3/types.go
index dfbf51a6..05dece8c 100755
--- a/pkg/apis/flagger/v1alpha3/types.go
+++ b/pkg/apis/flagger/v1alpha3/types.go
@@ -109,14 +109,15 @@ type CanaryStatus struct {
 // CanaryService is used to create ClusterIP services
 // and Istio Virtual Service
 type CanaryService struct {
-	Port     int32                            `json:"port"`
-	Gateways []string                         `json:"gateways"`
-	Hosts    []string                         `json:"hosts"`
-	Match    []istiov1alpha3.HTTPMatchRequest `json:"match,omitempty"`
-	Rewrite  *istiov1alpha3.HTTPRewrite       `json:"rewrite,omitempty"`
-	Timeout  string                           `json:"timeout,omitempty"`
-	Retries  *istiov1alpha3.HTTPRetry         `json:"retries,omitempty"`
-	Headers  *istiov1alpha3.Headers           `json:"headers,omitempty"`
+	Port       int32                            `json:"port"`
+	Gateways   []string                         `json:"gateways"`
+	Hosts      []string                         `json:"hosts"`
+	Match      []istiov1alpha3.HTTPMatchRequest `json:"match,omitempty"`
+	Rewrite    *istiov1alpha3.HTTPRewrite       `json:"rewrite,omitempty"`
+	Timeout    string                           `json:"timeout,omitempty"`
+	Retries    *istiov1alpha3.HTTPRetry         `json:"retries,omitempty"`
+	Headers    *istiov1alpha3.Headers           `json:"headers,omitempty"`
+	CorsPolicy *istiov1alpha3.CorsPolicy        `json:"corsPolicy,omitempty"`
 }
 
 // CanaryAnalysis is used to describe how the analysis should be done
diff --git a/pkg/apis/flagger/v1alpha3/zz_generated.deepcopy.go b/pkg/apis/flagger/v1alpha3/zz_generated.deepcopy.go
index 8f28a1d9..638a9457 100644
--- a/pkg/apis/flagger/v1alpha3/zz_generated.deepcopy.go
+++ b/pkg/apis/flagger/v1alpha3/zz_generated.deepcopy.go
@@ -166,6 +166,11 @@ func (in *CanaryService) DeepCopyInto(out *CanaryService) {
 		*out = new(istiov1alpha3.Headers)
 		(*in).DeepCopyInto(*out)
 	}
+	if in.CorsPolicy != nil {
+		in, out := &in.CorsPolicy, &out.CorsPolicy
+		*out = new(istiov1alpha3.CorsPolicy)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }
 
diff --git a/pkg/apis/istio/v1alpha3/virtual_service.go b/pkg/apis/istio/v1alpha3/virtual_service.go
index 8b4c12f0..893f531f 100644
--- a/pkg/apis/istio/v1alpha3/virtual_service.go
+++ b/pkg/apis/istio/v1alpha3/virtual_service.go
@@ -328,7 +328,7 @@ type HTTPRoute struct {
 	// Cross-Origin Resource Sharing policy (CORS). Refer to
 	// https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
 	// for further details about cross origin resource sharing.
-	CorsPolicy *CorsPolicy `json:"CorsPolicy,omitempty"`
+	CorsPolicy *CorsPolicy `json:"corsPolicy,omitempty"`
 
 	// Additional HTTP headers to add before forwarding a request to the
 	// destination service.