diff --git a/contrib/completions/bash/kubectl b/contrib/completions/bash/kubectl
index 534f6a2320e..f78bc485e80 100644
--- a/contrib/completions/bash/kubectl
+++ b/contrib/completions/bash/kubectl
@@ -787,7 +787,6 @@ _kubectl_expose()
     flags+=("--type=")
 
     must_have_one_flag=()
-    must_have_one_flag+=("--port=")
     must_have_one_noun=()
 }
 
diff --git a/docs/user-guide/kubectl/kubectl_expose.md b/docs/user-guide/kubectl/kubectl_expose.md
index c8ed770ffbc..9d57bd83446 100644
--- a/docs/user-guide/kubectl/kubectl_expose.md
+++ b/docs/user-guide/kubectl/kubectl_expose.md
@@ -45,7 +45,7 @@ selector for a new Service on the specified port. If no labels are specified, th
 re-use the labels from the resource it exposes.
 
 ```
-kubectl expose (-f FILENAME | TYPE NAME) --port=port [--protocol=TCP|UDP] [--target-port=number-or-name] [--name=name] [----external-ip=external-ip-of-service] [--type=type]
+kubectl expose (-f FILENAME | TYPE NAME) [--port=port] [--protocol=TCP|UDP] [--target-port=number-or-name] [--name=name] [----external-ip=external-ip-of-service] [--type=type]
 ```
 
 ### Examples
@@ -122,7 +122,7 @@ $ kubectl expose rc streamer --port=4100 --protocol=udp --name=video-stream
 
 * [kubectl](kubectl.md)	 - kubectl controls the Kubernetes cluster manager
 
-###### Auto generated by spf13/cobra at 2015-09-10 18:53:03.159044239 +0000 UTC
+###### Auto generated by spf13/cobra at 2015-09-11 03:36:48.458259032 +0000 UTC
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
 [![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/user-guide/kubectl/kubectl_expose.md?pixel)]()
diff --git a/pkg/kubectl/cmd/expose.go b/pkg/kubectl/cmd/expose.go
index 06c50e98112..4a98991aaf3 100644
--- a/pkg/kubectl/cmd/expose.go
+++ b/pkg/kubectl/cmd/expose.go
@@ -57,7 +57,7 @@ func NewCmdExposeService(f *cmdutil.Factory, out io.Writer) *cobra.Command {
 	options := &ExposeOptions{}
 
 	cmd := &cobra.Command{
-		Use:     "expose (-f FILENAME | TYPE NAME) --port=port [--protocol=TCP|UDP] [--target-port=number-or-name] [--name=name] [----external-ip=external-ip-of-service] [--type=type]",
+		Use:     "expose (-f FILENAME | TYPE NAME) [--port=port] [--protocol=TCP|UDP] [--target-port=number-or-name] [--name=name] [----external-ip=external-ip-of-service] [--type=type]",
 		Short:   "Take a replicated application and expose it as Kubernetes Service",
 		Long:    expose_long,
 		Example: expose_example,
@@ -70,7 +70,6 @@ func NewCmdExposeService(f *cmdutil.Factory, out io.Writer) *cobra.Command {
 	cmd.Flags().String("generator", "service/v2", "The name of the API generator to use. There are 2 generators: 'service/v1' and 'service/v2'. The only difference between them is that service port in v1 is named 'default', while it is left unnamed in v2. Default is 'service/v2'.")
 	cmd.Flags().String("protocol", "TCP", "The network protocol for the service to be created. Default is 'tcp'.")
 	cmd.Flags().Int("port", -1, "The port that the service should serve on. Copied from the resource being exposed, if unspecified")
-	cmd.MarkFlagRequired("port")
 	cmd.Flags().String("type", "", "Type for this service: ClusterIP, NodePort, or LoadBalancer. Default is 'ClusterIP'.")
 	// TODO: remove create-external-load-balancer in code on or after Aug 25, 2016.
 	cmd.Flags().Bool("create-external-load-balancer", false, "If true, create an external load balancer for this service (trumped by --type). Implementation is cloud provider dependent. Default is 'false'.")