diff --git a/OrbitalBeat.go b/OrbitalBeat.go
index ec95619..b2dffe5 100644
--- a/OrbitalBeat.go
+++ b/OrbitalBeat.go
@@ -878,9 +878,7 @@ func main() {
 			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
 			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
 		},
-		PreferServerCipherSuites: false,
-		SessionTicketsDisabled:   false,
-		Renegotiation:            tls.RenegotiateFreelyAsClient,
+		SessionTicketsDisabled: false,
 		NextProtos: []string{
 			"http/1.1",
 		},
@@ -892,6 +890,14 @@ func main() {
 		},
 	}
 
+	if serverCertificate.Leaf.PublicKeyAlgorithm == x509.RSA || bogusCertificate.Leaf.PublicKeyAlgorithm == x509.RSA {
+		tlsConfig.CipherSuites = append(tlsConfig.CipherSuites, []uint16{
+			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+		}...)
+	}
+
 	if *http2Option {
 		tlsConfig.NextProtos = []string{
 			"h2",