diff --git a/modules/adnuntiusBidAdapter.js b/modules/adnuntiusBidAdapter.js
index 02dd7453be81..eb5f3c19dea1 100644
--- a/modules/adnuntiusBidAdapter.js
+++ b/modules/adnuntiusBidAdapter.js
@@ -105,15 +105,16 @@ const storageTool = (function () {
 
   const getUsi = function (meta, ortb2, bidderRequest) {
     // Fetch user id from parameters.
-    const paramUsi = (bidderRequest.bids) ? bidderRequest.bids.find(bid => {
-      if (bid.params && bid.params.userId) return true
-    }).params.userId : false
-    let usi = (meta && meta.usi) ? meta.usi : false
+    for (let i = 0; i < (bidderRequest.bids || []).length; i++) {
+      const bid = bidderRequest.bids[i];
+      if (bid.params && bid.params.userId) {
+        return bid.params.userId;
+      }
+    }
     if (ortb2 && ortb2.user && ortb2.user.id) {
-      usi = ortb2.user.id
+      return ortb2.user.id
     }
-    if (paramUsi) usi = paramUsi
-    return usi;
+    return (meta && meta.usi) ? meta.usi : false
   }
 
   const getSegmentsFromOrtb = function (ortb2) {
diff --git a/test/spec/modules/adnuntiusBidAdapter_spec.js b/test/spec/modules/adnuntiusBidAdapter_spec.js
index 20795b59e8cd..71f0a6a3a6c6 100644
--- a/test/spec/modules/adnuntiusBidAdapter_spec.js
+++ b/test/spec/modules/adnuntiusBidAdapter_spec.js
@@ -681,6 +681,26 @@ describe('adnuntiusBidAdapter', function() {
       expect(request[0]).to.have.property('url')
       expect(request[0].url).to.equal(`${ENDPOINT_URL_BASE}&userId=different_user_id`);
     });
+
+    it('should handle no user specified', function () {
+      config.setBidderConfig({
+        bidders: ['adnuntius'],
+      });
+      const req = [
+        {
+          bidId: 'adn-000000000008b6bc',
+          bidder: 'adnuntius',
+          params: {
+            auId: '000000000008b6bc',
+            network: 'adnuntius'
+          }
+        }
+      ]
+      const request = config.runWithBidder('adnuntius', () => spec.buildRequests(req, { bids: req }));
+      expect(request.length).to.equal(1);
+      expect(request[0]).to.have.property('url')
+      expect(request[0].url).to.equal(ENDPOINT_URL);
+    });
   });
 
   describe('user privacy', function() {