diff --git a/docs/scarpet/api/Events.md b/docs/scarpet/api/Events.md
index d2f6e4b2..8ff9a8b7 100644
--- a/docs/scarpet/api/Events.md
+++ b/docs/scarpet/api/Events.md
@@ -116,7 +116,7 @@ Triggered when player right clicks (interacts) with an entity, even if the entit
 the item they are holding. The event is invoked after receiving a packet from the client, before anything happens server side
 with that interaction.
 
-### `__on_player_trades(player, entity, buy, buyB, sell)`
+### `__on_player_trades(player, entity, buy_left, buy_right, sell)`
 Triggered when player trades with a merchant. The event is invoked after the server allow the trade, but before the inventory
 changes and merchant updates its trade-uses counter.
 The parameter `entity` can be `null` if the merchant is not an entity.
diff --git a/src/main/java/carpet/mixins/TradeOutputSlot_scarpetEventMixin.java b/src/main/java/carpet/mixins/TradeOutputSlot_scarpetEventMixin.java
index 8c6e57c1..053e799b 100644
--- a/src/main/java/carpet/mixins/TradeOutputSlot_scarpetEventMixin.java
+++ b/src/main/java/carpet/mixins/TradeOutputSlot_scarpetEventMixin.java
@@ -5,7 +5,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.screen.slot.TradeOutputSlot;
 import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.village.Merchant;
-import net.minecraft.village.TradeOffer;
+import net.minecraft.village.MerchantInventory;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
@@ -20,14 +20,15 @@ import static carpet.script.CarpetEventServer.Event.PLAYER_TRADES;
 public abstract class TradeOutputSlot_scarpetEventMixin {
     @Shadow @Final private Merchant merchant;
 
+    @Shadow @Final private MerchantInventory merchantInventory;
+
     @Inject(method = "onTakeItem", at = @At(value = "INVOKE",
-            target = "Lnet/minecraft/village/Merchant;trade(Lnet/minecraft/village/TradeOffer;)V"),
-            locals = LocalCapture.CAPTURE_FAILHARD
+            target = "Lnet/minecraft/village/Merchant;trade(Lnet/minecraft/village/TradeOffer;)V")
     )
-    private void onTrade(PlayerEntity player, ItemStack stack, CallbackInfoReturnable cir, TradeOffer tradeOffer) {
+    private void onTrade(PlayerEntity player, ItemStack stack, CallbackInfoReturnable<ItemStack> cir) {
         if(PLAYER_TRADES.isNeeded() && !this.merchant.getMerchantWorld().isClient())
         {
-            PLAYER_TRADES.onTrade((ServerPlayerEntity) player, merchant, tradeOffer);
+            PLAYER_TRADES.onTrade((ServerPlayerEntity) player, merchant, merchantInventory.getTradeOffer());
         }
     }
 }
diff --git a/src/main/resources/assets/carpet/scripts/event_test.sc b/src/main/resources/assets/carpet/scripts/event_test.sc
index 91fccdac..11842f56 100644
--- a/src/main/resources/assets/carpet/scripts/event_test.sc
+++ b/src/main/resources/assets/carpet/scripts/event_test.sc
@@ -292,14 +292,14 @@ __on_player_picks_up_item(player, item) ->
     print(' Player '+player+' injects '+item);
 );
 
-__on_player_trades(player, entity, buy, buyB, sell) ->
+__on_player_trades(player, entity, buy_left, buy_right, sell) ->
 (
     print('');
     print('__on_player_trades(player, item)');
     print('player trades:');
     print('  - player: '+player);
     print('  - entity: '+ entity);
-    print('  - buy: '+ buy);
-    print('  - buyB: '+ buyB);
-    print('  - sell: '+ sell);
+    print('  - buy_left: '+ buy_left);
+    print('  - buy_right: '+ buy_right);
+    print('  - sell: '+ sell)
 );