diff --git a/acceptance/openstack/networking/v2/extensions/portsbinding/pkg.go b/acceptance/openstack/networking/v2/extensions/portsbinding/pkg.go
new file mode 100644
index 0000000..5dae1b1
--- /dev/null
+++ b/acceptance/openstack/networking/v2/extensions/portsbinding/pkg.go
@@ -0,0 +1 @@
+package portsbinding
diff --git a/acceptance/openstack/networking/v2/extensions/portsbinding/portsbinding_test.go b/acceptance/openstack/networking/v2/extensions/portsbinding/portsbinding_test.go
new file mode 100644
index 0000000..71fc7dc
--- /dev/null
+++ b/acceptance/openstack/networking/v2/extensions/portsbinding/portsbinding_test.go
@@ -0,0 +1,99 @@
+// +build acceptance networking portsbinding
+
+package portsbinding
+
+import (
+	"testing"
+
+	base "github.com/rackspace/gophercloud/acceptance/openstack/networking/v2"
+	"github.com/rackspace/gophercloud/openstack/networking/v2/extensions/portsbinding"
+	"github.com/rackspace/gophercloud/openstack/networking/v2/networks"
+	"github.com/rackspace/gophercloud/openstack/networking/v2/ports"
+	"github.com/rackspace/gophercloud/openstack/networking/v2/subnets"
+	th "github.com/rackspace/gophercloud/testhelper"
+)
+
+func TestPortBinding(t *testing.T) {
+	base.Setup(t)
+	defer base.Teardown()
+
+	// Setup network
+	t.Log("Setting up network")
+	networkID, err := createNetwork()
+	th.AssertNoErr(t, err)
+	defer networks.Delete(base.Client, networkID)
+
+	// Setup subnet
+	t.Logf("Setting up subnet on network %s", networkID)
+	subnetID, err := createSubnet(networkID)
+	th.AssertNoErr(t, err)
+	defer subnets.Delete(base.Client, subnetID)
+
+	// Create port
+	t.Logf("Create port based on subnet %s", subnetID)
+	hostID := "localhost"
+	portID := createPort(t, networkID, subnetID, hostID)
+
+	// Get port
+	if portID == "" {
+		t.Fatalf("In order to retrieve a port, the portID must be set")
+	}
+	p, err := portsbinding.Get(base.Client, portID).Extract()
+	th.AssertNoErr(t, err)
+	th.AssertEquals(t, p.ID, portID)
+	th.AssertEquals(t, p.HostID, hostID)
+
+	// Update port
+	newHostID := "openstack"
+	updateOpts := portsbinding.UpdateOpts{
+		HostID: newHostID,
+	}
+	p, err = portsbinding.Update(base.Client, portID, updateOpts).Extract()
+
+	th.AssertNoErr(t, err)
+	th.AssertEquals(t, p.HostID, newHostID)
+
+	// Delete port
+	res := ports.Delete(base.Client, portID)
+	th.AssertNoErr(t, res.Err)
+}
+
+func createPort(t *testing.T, networkID, subnetID, hostID string) string {
+	enable := false
+	opts := portsbinding.CreateOpts{
+		CreateOptsBuilder: ports.CreateOpts{
+			NetworkID:    networkID,
+			Name:         "my_port",
+			AdminStateUp: &enable,
+			FixedIPs:     []ports.IP{{SubnetID: subnetID}},
+		},
+		HostID: hostID,
+	}
+
+	p, err := portsbinding.Create(base.Client, opts).Extract()
+	th.AssertNoErr(t, err)
+	th.AssertEquals(t, p.NetworkID, networkID)
+	th.AssertEquals(t, p.Name, "my_port")
+	th.AssertEquals(t, p.AdminStateUp, false)
+
+	return p.ID
+}
+
+func createNetwork() (string, error) {
+	res, err := networks.Create(base.Client, networks.CreateOpts{Name: "tmp_network", AdminStateUp: networks.Up}).Extract()
+	return res.ID, err
+}
+
+func createSubnet(networkID string) (string, error) {
+	s, err := subnets.Create(base.Client, subnets.CreateOpts{
+		NetworkID:  networkID,
+		CIDR:       "192.168.199.0/24",
+		IPVersion:  subnets.IPv4,
+		Name:       "my_subnet",
+		EnableDHCP: subnets.Down,
+		AllocationPools: []subnets.AllocationPool{
+			{Start: "192.168.199.2", End: "192.168.199.200"},
+		},
+	}).Extract()
+	return s.ID, err
+}
diff --git a/openstack/networking/v2/extensions/portsbinding/requests.go b/openstack/networking/v2/extensions/portsbinding/requests.go
index 952e082..7105a49 100644
--- a/openstack/networking/v2/extensions/portsbinding/requests.go
+++ b/openstack/networking/v2/extensions/portsbinding/requests.go
@@ -76,12 +76,19 @@
 
 // ToPortUpdateMap casts an UpdateOpts struct to a map.
 func (opts UpdateOpts) ToPortUpdateMap() (map[string]interface{}, error) {
-	p, err := opts.UpdateOptsBuilder.ToPortUpdateMap()
-	if err != nil {
-		return nil, err
+	var port map[string]interface{}
+	if opts.UpdateOptsBuilder != nil {
+		p, err := opts.UpdateOptsBuilder.ToPortUpdateMap()
+		if err != nil {
+			return nil, err
+		}
+
+		port = p["port"].(map[string]interface{})
 	}
 
-	port := p["port"].(map[string]interface{})
+	if port == nil {
+		port = make(map[string]interface{})
+	}
 
 	if opts.HostID != "" {
 		port["binding:host_id"] = opts.HostID