diff --git a/pkg/resources/kubernetes/kubernetes.go b/pkg/resources/kubernetes/kubernetes.go
index 1338017..a2d5923 100644
--- a/pkg/resources/kubernetes/kubernetes.go
+++ b/pkg/resources/kubernetes/kubernetes.go
@@ -27,11 +27,8 @@ import (
 // its GroupVersionKind and ObjectMeta.
 func ToKusionResourceID(gvk schema.GroupVersionKind, objectMeta metav1.ObjectMeta) string {
 	// resource id example: apps/v1:Deployment:nginx:nginx-deployment
-	if gvk.Group == "" {
-		gvk.Group = "core"
-	}
-
-	id := gvk.Group + resources.SegmentSeparator + gvk.Version + resources.SegmentSeparator + gvk.Kind
+	apiVersion, kind := gvk.ToAPIVersionAndKind()
+	id := apiVersion + resources.SegmentSeparator + kind
 	if objectMeta.Namespace != "" {
 		id += resources.SegmentSeparator + objectMeta.Namespace
 	}
diff --git a/pkg/resources/terraform/terraform.go b/pkg/resources/terraform/terraform.go
index 1d47336..dce35c4 100644
--- a/pkg/resources/terraform/terraform.go
+++ b/pkg/resources/terraform/terraform.go
@@ -70,8 +70,8 @@ func ToKusionResourceID(p Provider, resourceType, resourceName string) (string,
 		return "", err
 	}
 
-	tfProviderStr := tfProvider.String()
-	return strings.Join([]string{tfProviderStr, resourceType, resourceName}, resources.SegmentSeparator), nil
+	tfProviderIDStr := tfProvider.IDString()
+	return strings.Join([]string{tfProviderIDStr, resourceType, resourceName}, resources.SegmentSeparator), nil
 }
 
 // NewKusionResource creates a Kusion Resource object with the given resourceType, resourceID, attributes.
diff --git a/pkg/resources/terraform/types.go b/pkg/resources/terraform/types.go
index b58149c..03cd9fe 100644
--- a/pkg/resources/terraform/types.go
+++ b/pkg/resources/terraform/types.go
@@ -48,3 +48,8 @@ type TFProvider struct {
 func (tp TFProvider) String() string {
 	return tp.Hostname.ForDisplay() + resources.SegmentSeparator + tp.Namespace + resources.SegmentSeparator + tp.Type
 }
+
+// IDString returns the ProviderNamespace:ProviderName string, intended for use in a kusion resource ID.
+func (tp TFProvider) IDString() string {
+	return tp.Namespace + resources.SegmentSeparator + tp.Type
+}