diff --git a/README.md b/README.md
index 68f27bc..b227697 100644
--- a/README.md
+++ b/README.md
@@ -122,8 +122,9 @@ For TLS, you'll need a private X509 key and a certificate. A self-signed key
 with a certificate can be generated like so:
 ```
 cd ~/.config/wayvnc
-openssl req -x509 -newkey rsa:4096 -sha256 -days 3650 -nodes \
-	-keyout tls_key.pem -out tls_cert.pem -subj /CN=localhost \
+openssl req -x509 -newkey ec -pkeyopt ec_paramgen_curve:secp384r1 -sha384 \
+	-days 3650 -nodes -keyout tls_key.pem -out tls_cert.pem \
+	-subj /CN=localhost \
 	-addext subjectAltName=DNS:localhost,DNS:localhost,IP:127.0.0.1
 cd -
 ```