1 files changed, 3 insertions, 2 deletions

diff --git a/qmail-smtpd.c b/qmail-smtpd.c
index 5b862a0..d5be4af 100644
--- a/qmail-smtpd.c
+++ b/qmail-smtpd.c
@@ -1432,8 +1432,9 @@ void tls_init()
   /* a new SSL context with the bare minimum of options */
   ctx = SSL_CTX_new(SSLv23_server_method());
   if (!ctx) { tls_err("unable to initialize ctx"); return; }
-  SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
-                           SSL_OP_CIPHER_SERVER_PREFERENCE);
+  SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3 |
+                           SSL_OP_CIPHER_SERVER_PREFERENCE |
+                           SSL_OP_PRIORITIZE_CHACHA);
 
   if (!SSL_CTX_use_certificate_chain_file(ctx, servercert))
     { SSL_CTX_free(ctx); tls_err("missing certificate"); return; }