diff --git a/modules/showheroes-bsBidAdapter.js b/modules/showheroes-bsBidAdapter.js
index 1de34f9befb..65fa45bf0ed 100644
--- a/modules/showheroes-bsBidAdapter.js
+++ b/modules/showheroes-bsBidAdapter.js
@@ -71,7 +71,7 @@ const converter = ortbConverter({
         bidResponse.renderer = createRenderer(bidResponse, renderConfig);
       }
     }
-    bidResponse.callbacks = bid.ext.callbacks;
+    bidResponse.callbacks = bid.ext?.callbacks;
     bidResponse.extra = bid.ext?.extra;
     return bidResponse;
   },
diff --git a/modules/showheroes-bsBidAdapter.md b/modules/showheroes-bsBidAdapter.md
index 49640b7e8e7..f306593a783 100644
--- a/modules/showheroes-bsBidAdapter.md
+++ b/modules/showheroes-bsBidAdapter.md
@@ -25,7 +25,7 @@ A module that connects to ShowHeroes demand source to fetch bids.
                    {
                        bidder: "showheroes-bs",
                        params: {
-                           unitId: 'AACBWAcof-611K4U',
+                           unitId: '1234abcd-5678efgh',
                        }
                    }
                ]
@@ -42,7 +42,7 @@ A module that connects to ShowHeroes demand source to fetch bids.
                    {
                        bidder: "showheroes-bs",
                        params: {
-                           unitId: 'AACBTwsZVANd9NlB',
+                           unitId: '1234abcd-5678efgh',
                        }
                    }
                ]