diff --git a/modules/insticatorBidAdapter.js b/modules/insticatorBidAdapter.js
index 8c3939928c8..57e50c3e1d2 100644
--- a/modules/insticatorBidAdapter.js
+++ b/modules/insticatorBidAdapter.js
@@ -14,6 +14,7 @@ const ENDPOINT = 'https://ex.ingage.tech/v1/openrtb'; // production endpoint
 const USER_ID_KEY = 'hb_insticator_uid';
 const USER_ID_COOKIE_EXP = 2592000000; // 30 days
 const BID_TTL = 300; // 5 minutes
+const ASI_REGEX = /^insticator\.com$/;
 
 config.setDefaults({
   insticator: {
@@ -118,6 +119,17 @@ function buildUser() {
   };
 }
 
+function extractSchain(bids) {
+  if (!bids) return;
+
+  const bid = bids.find(bid =>
+    bid.schain &&
+    bid.schain.nodes &&
+    bid.schain.nodes.find(node => ASI_REGEX.test(node.asi))
+  );
+  return bid ? bid.schain : bids[0].schain;
+}
+
 function buildRequest(validBidRequests, bidderRequest) {
   const req = {
     id: bidderRequest.bidderRequestId,
@@ -145,13 +157,10 @@ function buildRequest(validBidRequests, bidderRequest) {
     };
   }
 
-  if (bidderRequest.schain) {
-    req.source = {
-      ...req.source,
-      ext: {
-        schain: bidderRequest.schain,
-      }
-    }
+  const schain = extractSchain(bidderRequest.bids);
+
+  if (schain) {
+    req.source.ext = { schain };
   }
 
   return req;