diff --git a/cmd/flags.go b/cmd/flags.go
index 944e86e..6381ee5 100644
--- a/cmd/flags.go
+++ b/cmd/flags.go
@@ -66,7 +66,7 @@ var ServeFlags = []cli.Flag{
 
 	// ACME
 	&cli.StringFlag{
-		Name:    "acme-api",
+		Name:    "acme-api-endpoint",
 		EnvVars: []string{"ACME_API"},
 		Value:   "https://acme-v02.api.letsencrypt.org/directory",
 	},
diff --git a/cmd/main.go b/cmd/main.go
index 1d1cede..fcc2b83 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -42,7 +42,7 @@ func Serve(ctx *cli.Context) error {
 	listeningAddress := fmt.Sprintf("%s:%s", ctx.String("host"), ctx.String("port"))
 	enableHTTPServer := ctx.Bool("enable-http-server")
 
-	acmeAPI := ctx.String("acme-api")
+	acmeAPI := ctx.String("acme-api-endpoint")
 	acmeMail := ctx.String("acme-email")
 	acmeUseRateLimits := ctx.Bool("acme-use-rate-limits")
 	acmeAcceptTerms := ctx.Bool("acme-accept-terms")