diff --git a/lib/workers/index.js b/lib/workers/index.js
index b5704c68b..fe868e250 100644
--- a/lib/workers/index.js
+++ b/lib/workers/index.js
@@ -427,9 +427,9 @@ Workers.initialize = function (Env, config, _cb) {
         Env.completeUpload = function (safeKey, arg, owned, cb) {
             sendCommand({
                 command: "COMPLETE_UPLOAD",
-                owned: owned,
-                safeKey: safeKey,
-                arg: arg,
+                owned: owned, // Boolean
+                safeKey: safeKey, // String (public key)
+                arg: arg, // String (file id)
             }, cb);
         };