diff --git a/src/com/echonest/api/v4/EchoNestAPI.java b/src/com/echonest/api/v4/EchoNestAPI.java
index 58626a5..2160acd 100644
--- a/src/com/echonest/api/v4/EchoNestAPI.java
+++ b/src/com/echonest/api/v4/EchoNestAPI.java
@@ -485,7 +485,6 @@ public Track uploadTrack(URL trackUrl, boolean wait)
 
         p.add("url", trackUrl.toExternalForm());
         p.add("wait", wait ? "true" : "false");
-        p.add("upload", (String) null);
         if (wait) {
             p.add("bucket", "audio_summary");
         }