diff --git a/cmd/kubeadm/app/phases/upgrade/postupgrade.go b/cmd/kubeadm/app/phases/upgrade/postupgrade.go
index c05c5f0c039..09ad32e70d8 100644
--- a/cmd/kubeadm/app/phases/upgrade/postupgrade.go
+++ b/cmd/kubeadm/app/phases/upgrade/postupgrade.go
@@ -296,26 +296,3 @@ func GetKubeletDir(dryRun bool) (string, error) {
 	}
 	return kubeadmconstants.KubeletRunDirectory, nil
 }
-
-// moveFiles moves files from one directory to another.
-func moveFiles(files map[string]string) error {
-	filesToRecover := make(map[string]string, len(files))
-	for from, to := range files {
-		if err := os.Rename(from, to); err != nil {
-			return rollbackFiles(filesToRecover, err)
-		}
-		filesToRecover[to] = from
-	}
-	return nil
-}
-
-// rollbackFiles moves the files back to the original directory.
-func rollbackFiles(files map[string]string, originalErr error) error {
-	errs := []error{originalErr}
-	for from, to := range files {
-		if err := os.Rename(from, to); err != nil {
-			errs = append(errs, err)
-		}
-	}
-	return errors.Errorf("couldn't move these files: %v. Got errors: %v", files, errorsutil.NewAggregate(errs))
-}
diff --git a/cmd/kubeadm/app/phases/upgrade/postupgrade_test.go b/cmd/kubeadm/app/phases/upgrade/postupgrade_test.go
index cd310301ffc..f090889beb1 100644
--- a/cmd/kubeadm/app/phases/upgrade/postupgrade_test.go
+++ b/cmd/kubeadm/app/phases/upgrade/postupgrade_test.go
@@ -25,6 +25,7 @@ import (
 
 	"github.com/pkg/errors"
 
+	errorsutil "k8s.io/apimachinery/pkg/util/errors"
 	kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 	"k8s.io/kubernetes/cmd/kubeadm/app/componentconfigs"
 	"k8s.io/kubernetes/cmd/kubeadm/app/constants"
@@ -206,3 +207,26 @@ func (cc *componentConfig) IsUserSupplied() bool {
 func (cc *componentConfig) SetUserSupplied(userSupplied bool) {
 	cc.userSupplied = userSupplied
 }
+
+// moveFiles moves files from one directory to another.
+func moveFiles(files map[string]string) error {
+	filesToRecover := make(map[string]string, len(files))
+	for from, to := range files {
+		if err := os.Rename(from, to); err != nil {
+			return rollbackFiles(filesToRecover, err)
+		}
+		filesToRecover[to] = from
+	}
+	return nil
+}
+
+// rollbackFiles moves the files back to the original directory.
+func rollbackFiles(files map[string]string, originalErr error) error {
+	errs := []error{originalErr}
+	for from, to := range files {
+		if err := os.Rename(from, to); err != nil {
+			errs = append(errs, err)
+		}
+	}
+	return errors.Errorf("couldn't move these files: %v. Got errors: %v", files, errorsutil.NewAggregate(errs))
+}