diff --git a/std/user_filter.c b/std/user_filter.c
index e4190c8..20b1925 100644
--- a/std/user_filter.c
+++ b/std/user_filter.c
@@ -294,6 +294,7 @@
       break;
 
     case "ssl":
+    case "tls":
     case "stunnel":
       zwi = filter(orig,"uses_ssl");
       break;