diff --git a/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/config.go b/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/config.go
index 500e55c0206..45f0d6f4a70 100644
--- a/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/config.go
+++ b/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/config.go
@@ -27,6 +27,7 @@ import (
 
 const (
 	StorageTypeUnset = ""
+	StorageTypeETCD2 = "etcd2"
 	StorageTypeETCD3 = "etcd3"
 
 	DefaultCompactInterval      = 5 * time.Minute
diff --git a/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/factory/factory.go b/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/factory/factory.go
index 1e8a8cdb0f0..fb1e2d2896a 100644
--- a/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/factory/factory.go
+++ b/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/factory/factory.go
@@ -30,8 +30,8 @@ type DestroyFunc func()
 // Create creates a storage backend based on given config.
 func Create(c storagebackend.Config, newFunc func() runtime.Object) (storage.Interface, DestroyFunc, error) {
 	switch c.Type {
-	case "etcd2":
-		return nil, nil, fmt.Errorf("%v is no longer a supported storage backend", c.Type)
+	case storagebackend.StorageTypeETCD2:
+		return nil, nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
 	case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
 		return newETCD3Storage(c, newFunc)
 	default:
@@ -42,8 +42,8 @@ func Create(c storagebackend.Config, newFunc func() runtime.Object) (storage.Int
 // CreateHealthCheck creates a healthcheck function based on given config.
 func CreateHealthCheck(c storagebackend.Config) (func() error, error) {
 	switch c.Type {
-	case "etcd2":
-		return nil, fmt.Errorf("%v is no longer a supported storage backend", c.Type)
+	case storagebackend.StorageTypeETCD2:
+		return nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)
 	case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
 		return newETCD3HealthCheck(c)
 	default: