diff --git a/Fauna/Types/Stream.cs b/Fauna/Types/Stream.cs
index 8ab4d9de..49ff249d 100644
--- a/Fauna/Types/Stream.cs
+++ b/Fauna/Types/Stream.cs
@@ -26,14 +26,14 @@ public void Serialize(System.IO.Stream stream)
         var writer = new Utf8JsonWriter(stream);
         writer.WriteStartObject();
         writer.WriteString("token", Token);
-        if (StartTs != null)
-        {
-            writer.WriteNumber("start_ts", StartTs.Value);
-        }
         if (LastCursor != null)
         {
             writer.WriteString("cursor", LastCursor);
         }
+        else if (StartTs != null)
+        {
+            writer.WriteNumber("start_ts", StartTs.Value);
+        }
         writer.WriteEndObject();
         writer.Flush();
     }