diff --git a/ext/puma_http11/mini_ssl.c b/ext/puma_http11/mini_ssl.c
index 7e0fd5e..88c4652 100644
--- a/ext/puma_http11/mini_ssl.c
+++ b/ext/puma_http11/mini_ssl.c
@@ -183,7 +183,7 @@ VALUE engine_init_server(VALUE self, VALUE mini_ssl_ctx) {
     SSL_CTX_set_cipher_list(ctx, RSTRING_PTR(ssl_cipher_filter));
   }
   else {
-    SSL_CTX_set_cipher_list(ctx, "HIGH:!aNULL@STRENGTH");
+    SSL_CTX_set_cipher_list(ctx, "PROFILE=SYSTEM");
   }
 
   DH *dh = get_dh1024();
-- 
2.5.5