diff --git a/stock-manager.lua b/stock-manager.lua
index e912b81..520b9bc 100644
--- a/stock-manager.lua
+++ b/stock-manager.lua
@@ -18,7 +18,7 @@ local SLEEP_T = 10
 function remove_waste(source, discard_rest)
     local amounts_to_keep = KEEP_ONLY
     local discard = function (item, amt, dest)
-        peripheral.call(source, "requestFiltered", dest
+        peripheral.call(source, "requestFiltered", dest,
             {
                 name = item.name,
                 _requestCount = amt,