diff --git a/modules/adyoulikeBidAdapter.js b/modules/adyoulikeBidAdapter.js
index 4080d9f25cd..6eb897d334e 100644
--- a/modules/adyoulikeBidAdapter.js
+++ b/modules/adyoulikeBidAdapter.js
@@ -63,6 +63,7 @@ export const spec = {
     // convert Native ORTB definition to old-style prebid native definition
     bidRequests = convertOrtbRequestToProprietaryNative(bidRequests);
     let hasVideo = false;
+    let eids;
     const payload = {
       Version: VERSION,
       Bids: bidRequests.reduce((accumulator, bidReq) => {
@@ -81,6 +82,9 @@ export const spec = {
         if (bidReq.schain) {
           accumulator[bidReq.bidId].SChain = bidReq.schain;
         }
+        if (!eids && bidReq.userIdAsEids && bidReq.userIdAsEids.length) {
+          eids = bidReq.userIdAsEids;
+        }
         if (mediatype === NATIVE) {
           let nativeReq = bidReq.mediaTypes.native;
           if (nativeReq.type === 'image') {
@@ -120,9 +124,8 @@ export const spec = {
     if (bidderRequest.ortb2) {
       payload.ortb2 = bidderRequest.ortb2;
     }
-
-    if (deepAccess(bidderRequest, 'userIdAsEids')) {
-      payload.userId = bidderRequest.userIdAsEids;
+    if (eids) {
+      payload.eids = eids;
     }
 
     payload.pbjs_version = '$prebid.version$';
diff --git a/test/spec/modules/adyoulikeBidAdapter_spec.js b/test/spec/modules/adyoulikeBidAdapter_spec.js
index 7310f736f7e..de77c741364 100644
--- a/test/spec/modules/adyoulikeBidAdapter_spec.js
+++ b/test/spec/modules/adyoulikeBidAdapter_spec.js
@@ -707,32 +707,21 @@ describe('Adyoulike Adapter', function () {
       expect(payload.gdprConsent.consentRequired).to.be.null;
     });
 
-    it('should add userid eids information to the request', function () {
-      let bidderRequest = {
-        'auctionId': '1d1a030790a475',
-        'bidderRequestId': '22edbae2733bf6',
-        'timeout': 3000,
-        'userIdAsEids':
-        [
-          {
-            'source': 'pubcid.org',
-            'uids': [
-              {
-                'atype': 1,
-                'id': '01EAJWWNEPN3CYMM5N8M5VXY22'
-              }
-            ]
-          }
-        ]
-      };
-
-      bidderRequest.bids = bidRequestWithSinglePlacement;
-
-      const request = spec.buildRequests(bidRequestWithSinglePlacement, bidderRequest);
+    it('should add eids eids information to the request', function () {
+      let bidRequest = bidRequestWithSinglePlacement;
+      bidRequest[0].userIdAsEids = [{
+        'source': 'pubcid.org',
+        'uids': [{
+          'atype': 1,
+          'id': '01EAJWWNEPN3CYMM5N8M5VXY22'
+        }]
+      }]
+
+      const request = spec.buildRequests(bidRequest, bidderRequest);
       const payload = JSON.parse(request.data);
 
-      expect(payload.userId).to.exist;
-      expect(payload.userId).to.deep.equal(bidderRequest.userIdAsEids);
+      expect(payload.eids).to.exist;
+      expect(payload.eids).to.deep.equal(bidRequest[0].userIdAsEids);
     });
 
     it('sends bid request to endpoint with single placement', function () {