diff --git a/acme/client.go b/acme/client.go
index 32a69c65..63c65059 100644
--- a/acme/client.go
+++ b/acme/client.go
@@ -47,7 +47,6 @@ type Client struct {
 	user       User
 	jws        *jws
 	keyBits    int
-	devMode    bool
 	issuerCert []byte
 	solvers    map[string]solver
 }
@@ -57,7 +56,7 @@ type Client struct {
 // usr - A filled in user struct
 // optPort - The alternative port to listen on for challenges.
 // devMode - If set to true, all CanSolve() checks are skipped.
-func NewClient(caURL string, usr User, keyBits int, optPort string, devMode bool) *Client {
+func NewClient(caURL string, usr User, keyBits int, optPort string) *Client {
 	if err := usr.GetPrivateKey().Validate(); err != nil {
 		logger().Fatalf("Could not validate the private account key of %s\n\t%v", usr.GetEmail(), err)
 	}
@@ -85,7 +84,7 @@ func NewClient(caURL string, usr User, keyBits int, optPort string, devMode bool
 		logger().Fatal("The directory returned by the server was invalid.")
 	}
 
-	return &Client{directory: dir, user: usr, jws: jws, keyBits: keyBits, devMode: devMode, solvers: solvers}
+	return &Client{directory: dir, user: usr, jws: jws, keyBits: keyBits, solvers: solvers}
 }
 
 // Register the current account to the ACME server.
diff --git a/cli.go b/cli.go
index 99a48ace..e4ab6923 100644
--- a/cli.go
+++ b/cli.go
@@ -85,10 +85,6 @@ func main() {
 			Name:  "port",
 			Usage: "Challenges will use this port to listen on. Please make sure to forward port 443 to this port on your machine. Otherwise use setcap on the binary",
 		},
-		cli.BoolFlag{
-			Name:  "devMode",
-			Usage: "If set to true, all client side challenge pre-tests are skipped.",
-		},
 	}
 
 	app.Run(os.Args)
diff --git a/cli_handlers.go b/cli_handlers.go
index fa7cc9c8..253e1e8d 100644
--- a/cli_handlers.go
+++ b/cli_handlers.go
@@ -32,7 +32,7 @@ func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
 
 	//TODO: move to account struct? Currently MUST pass email.
 	acc := NewAccount(c.GlobalString("email"), conf)
-	return conf, acc, acme.NewClient(c.GlobalString("server"), acc, conf.RsaBits(), conf.OptPort(), c.GlobalBool("devMode"))
+	return conf, acc, acme.NewClient(c.GlobalString("server"), acc, conf.RsaBits(), conf.OptPort())
 }
 
 func saveCertRes(certRes acme.CertificateResource, conf *Configuration) {