diff --git a/web/config.json b/web/config.json
index 906920a..69df271 100644
--- a/web/config.json
+++ b/web/config.json
@@ -297,7 +297,9 @@
                     {"l": "TWA/TWS","v":"twa_tws"},
                     {"l": "AWA/AWS", "v":"awa_aws"},
                     {"l": "TWD/TWS","v":"twd_tws"}
-                ]
+                ],
+                "category":"converter",
+                "default":"$d"
 
             }
         ]