diff --git a/controller.go b/controller.go
index 8bbff7e..1b4f9ea 100644
--- a/controller.go
+++ b/controller.go
@@ -25,7 +25,7 @@ var (
 func (c *Client) ControllerList(opts types.ListOptions) ([]*types.Controller, error) {
 	listOpts := doOptions{
 		fieldSelector: opts.FieldSelector,
-		labelSelector: opts.LabelSelector,		
+		labelSelector: opts.LabelSelector,
 		context:       opts.Context,
 	}
 
diff --git a/login_test.go b/login_test.go
index 2c356c9..93798f0 100644
--- a/login_test.go
+++ b/login_test.go
@@ -33,7 +33,7 @@ func TestLoginBadCreds(t *testing.T) {
 	}
 
 	if token != "" {
-		t.Error("token (%v) incorrectly returned", token)
+		t.Errorf("token (%v) incorrectly returned", token)
 	}
 }
 
diff --git a/types/controller.go b/types/controller.go
index b6381f1..4d71cdf 100644
--- a/types/controller.go
+++ b/types/controller.go
@@ -59,6 +59,9 @@ type Controller struct {
 	VersionInfo     map[string]VersionInfo `json:"versionInfo"`
 	Version         string                 `json:"version"`
 
+	// Cordon true if in an unschedulable state
+	Cordon bool `json:"unschedulable"`
+
 	// high level stats that combine info from all driver instances
 	CapacityStats CapacityStats `json:"capacityStats"`
 }
diff --git a/types/controller_update_options.go b/types/controller_update_options.go
index 8c17ade..a55b816 100644
--- a/types/controller_update_options.go
+++ b/types/controller_update_options.go
@@ -19,6 +19,9 @@ type ControllerUpdateOptions struct {
 	// Labels are user-defined key/value metadata.
 	Labels map[string]string `json:"labels"`
 
+	// Cordon sets the controler into an unschedulable state if true
+	Cordon bool `json:"unschedulable"`
+
 	// Context can be set with a timeout or can be used to cancel a request.
 	Context context.Context `json:"-"`
 }