diff --git a/bidders.md b/bidders.md
index 77ac975e86..48b00b1ed9 100644
--- a/bidders.md
+++ b/bidders.md
@@ -73,7 +73,7 @@ These parameters in the bidReponse object are common across all bidders.
 {: .table .table-bordered .table-striped }
 | Name | Scope | Description | Example |
 | :--- | :---- | :---------- | :------ |
-| `aaxId` | required | The site ID for Amazon. | "1234" |
+| `aid` | required | The site ID for Amazon. | "1234" |
 
 ###bidResponse (bidder specific)
 
@@ -86,7 +86,9 @@ These parameters in the bidReponse object are common across all bidders.
 
 ###Caveats
 
-Prebid.js sends separate key-value targeting for Amazon, because only the obfuscated price is returned. Please follow Amazon's instructions to setup line items and creatives in your ad server. 
+Prebid.js sends separate key-value targeting for Amazon, because only the obfuscated price is returned. Please follow Amazon's instructions to setup line items and creatives in your ad server.
+
+ Just one `ad unit` is required for this bidder, unlike other bidders where you specify a configuration for each ad unit.
 
 ###Default bidder settings