diff --git a/ctr/checkpoint.go b/ctr/checkpoint.go
index 2d13e48..43049ee 100644
--- a/ctr/checkpoint.go
+++ b/ctr/checkpoint.go
@@ -10,17 +10,17 @@ import (
 	netcontext "golang.org/x/net/context"
 )
 
-var CheckpointCommand = cli.Command{
+var checkpointCommand = cli.Command{
 	Name:  "checkpoints",
 	Usage: "list all checkpoints",
 	Subcommands: []cli.Command{
-		ListCheckpointCommand,
-		CreateCheckpointCommand,
+		listCheckpointCommand,
+		createCheckpointCommand,
 	},
 	Action: listCheckpoints,
 }
 
-var ListCheckpointCommand = cli.Command{
+var listCheckpointCommand = cli.Command{
 	Name:   "list",
 	Usage:  "list all checkpoints for a container",
 	Action: listCheckpoints,
@@ -50,7 +50,7 @@ func listCheckpoints(context *cli.Context) {
 	}
 }
 
-var CreateCheckpointCommand = cli.Command{
+var createCheckpointCommand = cli.Command{
 	Name:  "create",
 	Usage: "create a new checkpoint for the container",
 	Flags: []cli.Flag{
@@ -94,7 +94,7 @@ var CreateCheckpointCommand = cli.Command{
 	},
 }
 
-var DeleteCheckpointCommand = cli.Command{
+var deleteCheckpointCommand = cli.Command{
 	Name:  "delete",
 	Usage: "delete a container's checkpoint",
 	Action: func(context *cli.Context) {
diff --git a/ctr/container.go b/ctr/container.go
index 5a7751a..b6f9b44 100644
--- a/ctr/container.go
+++ b/ctr/container.go
@@ -36,20 +36,20 @@ func getClient(ctx *cli.Context) types.APIClient {
 	return types.NewAPIClient(conn)
 }
 
-var ContainersCommand = cli.Command{
+var containersCommand = cli.Command{
 	Name:  "containers",
 	Usage: "interact with running containers",
 	Subcommands: []cli.Command{
-		ExecCommand,
-		KillCommand,
-		ListCommand,
-		StartCommand,
-		StatsCommand,
+		execCommand,
+		killCommand,
+		listCommand,
+		startCommand,
+		statsCommand,
 	},
 	Action: listContainers,
 }
 
-var ListCommand = cli.Command{
+var listCommand = cli.Command{
 	Name:   "list",
 	Usage:  "list all running containers",
 	Action: listContainers,
@@ -71,7 +71,7 @@ func listContainers(context *cli.Context) {
 	}
 }
 
-var StartCommand = cli.Command{
+var startCommand = cli.Command{
 	Name:  "start",
 	Usage: "start a container",
 	Flags: []cli.Flag{
@@ -239,7 +239,7 @@ func attachStdio(stdins, stdout, stderr *string) error {
 	return nil
 }
 
-var KillCommand = cli.Command{
+var killCommand = cli.Command{
 	Name:  "kill",
 	Usage: "send a signal to a container or its processes",
 	Flags: []cli.Flag{
@@ -269,7 +269,7 @@ var KillCommand = cli.Command{
 	},
 }
 
-var ExecCommand = cli.Command{
+var execCommand = cli.Command{
 	Name:  "exec",
 	Usage: "exec another process in an existing container",
 	Flags: []cli.Flag{
@@ -356,7 +356,7 @@ var ExecCommand = cli.Command{
 	},
 }
 
-var StatsCommand = cli.Command{
+var statsCommand = cli.Command{
 	Name:  "stats",
 	Usage: "get stats for running container",
 	Action: func(context *cli.Context) {
diff --git a/ctr/events.go b/ctr/events.go
index 06a1c54..71cdcf2 100644
--- a/ctr/events.go
+++ b/ctr/events.go
@@ -10,7 +10,7 @@ import (
 	netcontext "golang.org/x/net/context"
 )
 
-var EventsCommand = cli.Command{
+var eventsCommand = cli.Command{
 	Name:  "events",
 	Usage: "receive events from the containerd daemon",
 	Action: func(context *cli.Context) {
diff --git a/ctr/main.go b/ctr/main.go
index aa0a3e3..0811840 100644
--- a/ctr/main.go
+++ b/ctr/main.go
@@ -9,13 +9,13 @@ import (
 	"github.com/docker/containerd"
 )
 
-const Usage = `High performance container daemon cli`
+const usage = `High performance container daemon cli`
 
 func main() {
 	app := cli.NewApp()
 	app.Name = "ctr"
 	app.Version = containerd.Version
-	app.Usage = Usage
+	app.Usage = usage
 	app.Authors = []cli.Author{
 		{
 			Name:  "@crosbymichael",
@@ -34,9 +34,9 @@ func main() {
 		},
 	}
 	app.Commands = []cli.Command{
-		CheckpointCommand,
-		ContainersCommand,
-		EventsCommand,
+		checkpointCommand,
+		containersCommand,
+		eventsCommand,
 	}
 	app.Before = func(context *cli.Context) error {
 		if context.GlobalBool("debug") {