diff --git a/cmd/main.go b/cmd/main.go
index b72013a..d132d2a 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -60,8 +60,8 @@ func Serve(ctx *cli.Context) error {
 	acmeEabKID := ctx.String("acme-eab-kid")
 	acmeEabHmac := ctx.String("acme-eab-hmac")
 	dnsProvider := ctx.String("dns-provider")
-	if (!acmeAcceptTerms || dnsProvider == "") && acmeAPI != "https://acme.mock.directory" {
-		return errors.New("you must set $ACME_ACCEPT_TERMS and $DNS_PROVIDER, unless $ACME_API is set to https://acme.mock.directory")
+	if !acmeAcceptTerms && acmeAPI != "https://acme.mock.directory" {
+		return errors.New("you must set $ACME_ACCEPT_TERMS, unless $ACME_API is set to https://acme.mock.directory")
 	}
 
 	allowedCorsDomains := AllowedCorsDomains