diff --git a/modules/insticatorBidAdapter.js b/modules/insticatorBidAdapter.js
index 42213baf843..296910f07c0 100644
--- a/modules/insticatorBidAdapter.js
+++ b/modules/insticatorBidAdapter.js
@@ -195,7 +195,7 @@ function buildRequest(validBidRequests, bidderRequest) {
 
 function buildBid(bid, bidderRequest) {
   const originalBid = bidderRequest.bids.find((b) => b.bidId === bid.impid);
-  const meta = Object.assign({}, bid.ext.meta, { advertiserDomains: bid.adomain });
+  const meta = Object.assign({}, bid.ext && bid.ext.meta || {}, { advertiserDomains: bid.adomain });
 
   return {
     requestId: bid.impid,