diff --git a/pkg/genericapiserver/endpoints/openapi/openapi.go b/pkg/genericapiserver/endpoints/openapi/openapi.go
index bbff9efb724..92196b3777e 100644
--- a/pkg/genericapiserver/endpoints/openapi/openapi.go
+++ b/pkg/genericapiserver/endpoints/openapi/openapi.go
@@ -24,10 +24,10 @@ import (
 
 	"github.com/emicklei/go-restful"
 
-	"k8s.io/kubernetes/pkg/util"
+	"k8s.io/apiserver/pkg/util/trie"
 )
 
-var verbs = util.CreateTrie([]string{"get", "log", "read", "replace", "patch", "delete", "deletecollection", "watch", "connect", "proxy", "list", "create", "patch"})
+var verbs = trie.New([]string{"get", "log", "read", "replace", "patch", "delete", "deletecollection", "watch", "connect", "proxy", "list", "create", "patch"})
 
 // ToValidOperationID makes an string a valid op ID (e.g. removing punctuations and whitespaces and make it camel case)
 func ToValidOperationID(s string, capitalizeFirstLetter bool) string {
diff --git a/pkg/genericapiserver/server/openapi/openapi.go b/pkg/genericapiserver/server/openapi/openapi.go
index ca5b51cf490..e8531ced269 100644
--- a/pkg/genericapiserver/server/openapi/openapi.go
+++ b/pkg/genericapiserver/server/openapi/openapi.go
@@ -27,8 +27,8 @@ import (
 
 	"k8s.io/apimachinery/pkg/openapi"
 	"k8s.io/apimachinery/pkg/util/json"
+	"k8s.io/apiserver/pkg/util/trie"
 	genericmux "k8s.io/kubernetes/pkg/genericapiserver/server/mux"
-	"k8s.io/kubernetes/pkg/util"
 )
 
 const (
@@ -127,7 +127,7 @@ func (o *openAPI) buildDefinitionForType(sample interface{}) (string, error) {
 
 // buildPaths builds OpenAPI paths using go-restful's web services.
 func (o *openAPI) buildPaths(webServices []*restful.WebService) error {
-	pathsToIgnore := util.CreateTrie(o.config.IgnorePrefixes)
+	pathsToIgnore := trie.New(o.config.IgnorePrefixes)
 	duplicateOpId := make(map[string]string)
 	for _, w := range webServices {
 		rootPath := w.RootPath()
diff --git a/pkg/util/trie.go b/staging/src/k8s.io/apiserver/pkg/util/trie/trie.go
similarity index 93%
rename from pkg/util/trie.go
rename to staging/src/k8s.io/apiserver/pkg/util/trie/trie.go
index 0eeac436dc9..90189e7a3d6 100644
--- a/pkg/util/trie.go
+++ b/staging/src/k8s.io/apiserver/pkg/util/trie/trie.go
@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package util
+package trie
 
 // A simple trie implementation with Add an HasPrefix methods only.
 type Trie struct {
@@ -23,8 +23,8 @@ type Trie struct {
 	word     string
 }
 
-// CreateTrie creates a Trie and add all strings in the provided list to it.
-func CreateTrie(list []string) Trie {
+// New creates a Trie and add all strings in the provided list to it.
+func New(list []string) Trie {
 	ret := Trie{
 		children: make(map[byte]*Trie),
 		wordTail: false,