diff --git a/static/test.html b/static/test.html
index 45c27e86..c911fe34 100644
--- a/static/test.html
+++ b/static/test.html
@@ -182,12 +182,18 @@
 
         function lookupDetailedTransaction(hash, format, f) {
             const method = 'getDetailedTransaction';
-            const params = [
+            const af = parseInt(format)
+            var params = [
                 hash,
-                {
-                    addressFormat: parseInt(format),
-                },
             ];
+            if (af !== 0) {
+                params = [
+                    hash,
+                    {
+                        addressFormat: af,
+                    },
+                ];
+            }
             return socket.send({ method, params }, f);
         }
 
@@ -437,4 +443,4 @@
     document.getElementById('serverAddress').value = window.location.protocol.replace("http", "ws") + "//" + window.location.host;
 </script>
 
-</html>
+</html>
\ No newline at end of file