diff --git a/command/stack/deploy.go b/command/stack/deploy.go
index 6daf9500f0..bf31dd7753 100644
--- a/command/stack/deploy.go
+++ b/command/stack/deploy.go
@@ -4,6 +4,7 @@ package stack
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/spf13/cobra"
 	"golang.org/x/net/context"
@@ -34,7 +35,7 @@ func newDeployCommand(dockerCli *command.DockerCli) *cobra.Command {
 		Short:   "Create and update a stack from a Distributed Application Bundle (DAB)",
 		Args:    cli.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
-			opts.namespace = args[0]
+			opts.namespace = strings.TrimSuffix(args[0], ".dab")
 			return runDeploy(dockerCli, opts)
 		},
 	}