diff --git a/pkg/apiserver/registry/datapackaging/package_storage_client.go b/pkg/apiserver/registry/datapackaging/package_storage_client.go
index 9cf2e2486..e6cb0643a 100644
--- a/pkg/apiserver/registry/datapackaging/package_storage_client.go
+++ b/pkg/apiserver/registry/datapackaging/package_storage_client.go
@@ -152,10 +152,14 @@ func (t PackageTranslator) ToExternalWatcher(intObjWatcher watch.Interface, fiel
 }
 
 func (t PackageTranslator) ToExternalError(err error) error {
-	statusErr := err.(*errors.StatusError)
+	statusErr, isStatusError := err.(*errors.StatusError)
+	if !isStatusError {
+		return err
+	}
 
-	if statusErr.ErrStatus.Details.Kind == "internalpackages" && statusErr.ErrStatus.Details.Group == internalpkgingv1alpha1.SchemeGroupVersion.Group {
-		packageName, err := t.ToExternalName(statusErr.ErrStatus.Details.Name)
+	details := statusErr.ErrStatus.Details
+	if details.Kind == "internalpackages" && details.Group == internalpkgingv1alpha1.SchemeGroupVersion.Group {
+		packageName, err := t.ToExternalName(details.Name)
 		if err != nil {
 			return err
 		}