diff --git a/source/behavior/trading/trading.json b/source/behavior/trading/trading.json
index cc3d3e2e..8997f17d 100644
--- a/source/behavior/trading/trading.json
+++ b/source/behavior/trading/trading.json
@@ -151,6 +151,7 @@
           },
           "trader_exp": { "type": "integer", "title": "Trader Experience" },
           "max_uses": { "type": "integer", "title": "Maximum Uses" },
+          "weight": { "type": "integer", "title": "Weight" },
           "reward_exp": { "type": "boolean", "title": "Reward Experience" }
         }
       }