diff --git a/src/connection.c b/src/connection.c
index 4a753d5..7763b01 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -523,7 +523,7 @@ void connection_connect_to_upstream(connection_t *client, const char *data, size
             return;
         }
 
-        const char *sni_hostname = route->rewrite_host ? client->request.host : route->upstream_host;
+        const char *sni_hostname = route->rewrite_host ? route->upstream_host : client->request.host;
         SSL_set_tlsext_host_name(up->ssl, sni_hostname);
         SSL_set_fd(up->ssl, up_fd);
         SSL_set_connect_state(up->ssl);