diff --git a/biofuel-manager.lua b/biofuel-manager.lua
index 0b6bb5e..335118a 100644
--- a/biofuel-manager.lua
+++ b/biofuel-manager.lua
@@ -80,6 +80,7 @@ local order = {
             amt_made = amt_made + count
             return make_order (amt_to_make, amt_made)
         end
+        return make_order (amt, 0)
     end,
 }