diff --git a/cas/cas.go b/cas/cas.go
index 0592fed5..8f385fb2 100644
--- a/cas/cas.go
+++ b/cas/cas.go
@@ -6,7 +6,6 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/smallstep/certificates/cas/apiv1"
-	"github.com/smallstep/certificates/cas/softcas"
 )
 
 // CertificateAuthorityService is the interface implemented by all the CAS.
@@ -35,15 +34,12 @@ func New(ctx context.Context, opts apiv1.Options) (CertificateAuthorityService,
 
 // NewCreator creates a new CertificateAuthorityCreator using the given options.
 func NewCreator(ctx context.Context, opts apiv1.Options) (CertificateAuthorityCreator, error) {
+	opts.IsCreator = true
+
 	t := apiv1.Type(strings.ToLower(opts.Type))
 	if t == apiv1.DefaultCAS {
 		t = apiv1.SoftCAS
 	}
-	if t == apiv1.SoftCAS {
-		return &softcas.SoftCAS{
-			KeyManager: opts.KeyManager,
-		}, nil
-	}
 
 	svc, err := New(ctx, opts)
 	if err != nil {
@@ -52,7 +48,6 @@ func NewCreator(ctx context.Context, opts apiv1.Options) (CertificateAuthorityCr
 
 	creator, ok := svc.(CertificateAuthorityCreator)
 	if !ok {
-
 		return nil, errors.Errorf("cas type '%s' does not implements CertificateAuthorityCreator", t)
 	}
 
diff --git a/cas/cas_test.go b/cas/cas_test.go
index a01e8dab..6c4c5c41 100644
--- a/cas/cas_test.go
+++ b/cas/cas_test.go
@@ -5,19 +5,40 @@ import (
 	"crypto/ed25519"
 	"crypto/x509"
 	"crypto/x509/pkix"
+	"fmt"
 	"reflect"
 	"testing"
 
-	"github.com/smallstep/certificates/cas/softcas"
-
 	"github.com/smallstep/certificates/cas/apiv1"
+	"github.com/smallstep/certificates/cas/softcas"
+	"github.com/smallstep/certificates/kms"
+	kmsapi "github.com/smallstep/certificates/kms/apiv1"
 )
 
+type mockCAS struct{}
+
+func (m *mockCAS) CreateCertificate(req *apiv1.CreateCertificateRequest) (*apiv1.CreateCertificateResponse, error) {
+	panic("not implemented")
+}
+
+func (m *mockCAS) RenewCertificate(req *apiv1.RenewCertificateRequest) (*apiv1.RenewCertificateResponse, error) {
+	panic("not implemented")
+}
+
+func (m *mockCAS) RevokeCertificate(req *apiv1.RevokeCertificateRequest) (*apiv1.RevokeCertificateResponse, error) {
+	panic("not implemented")
+}
+
 func TestNew(t *testing.T) {
 	expected := &softcas.SoftCAS{
 		Issuer: &x509.Certificate{Subject: pkix.Name{CommonName: "Test Issuer"}},
 		Signer: ed25519.PrivateKey{},
 	}
+
+	apiv1.Register(apiv1.Type("nockCAS"), func(ctx context.Context, opts apiv1.Options) (apiv1.CertificateAuthorityService, error) {
+		return nil, fmt.Errorf("an error")
+	})
+
 	type args struct {
 		ctx  context.Context
 		opts apiv1.Options
@@ -44,6 +65,7 @@ func TestNew(t *testing.T) {
 		}}, expected, false},
 		{"fail empty", args{context.Background(), apiv1.Options{}}, (*softcas.SoftCAS)(nil), true},
 		{"fail type", args{context.Background(), apiv1.Options{Type: "FailCAS"}}, nil, true},
+		{"fail load", args{context.Background(), apiv1.Options{Type: "nockCAS"}}, nil, true},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -58,3 +80,48 @@ func TestNew(t *testing.T) {
 		})
 	}
 }
+
+func TestNewCreator(t *testing.T) {
+	keyManager, err := kms.New(context.Background(), kmsapi.Options{})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	apiv1.Register(apiv1.Type("nockCAS"), func(ctx context.Context, opts apiv1.Options) (apiv1.CertificateAuthorityService, error) {
+		return &mockCAS{}, nil
+	})
+
+	type args struct {
+		ctx  context.Context
+		opts apiv1.Options
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    CertificateAuthorityCreator
+		wantErr bool
+	}{
+		{"ok empty", args{context.Background(), apiv1.Options{}}, &softcas.SoftCAS{}, false},
+		{"ok softcas", args{context.Background(), apiv1.Options{
+			Type: "softcas",
+		}}, &softcas.SoftCAS{}, false},
+		{"ok SoftCAS", args{context.Background(), apiv1.Options{
+			Type:       "SoftCAS",
+			KeyManager: keyManager,
+		}}, &softcas.SoftCAS{KeyManager: keyManager}, false},
+		{"fail type", args{context.Background(), apiv1.Options{Type: "FailCAS"}}, nil, true},
+		{"fail no creator", args{context.Background(), apiv1.Options{Type: "nockCAS"}}, nil, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := NewCreator(tt.args.ctx, tt.args.opts)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("NewCreator() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("NewCreator() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}