diff --git a/modules/zeta_global_sspBidAdapter.js b/modules/zeta_global_sspBidAdapter.js
index a273927e1ec..2ea6d745096 100644
--- a/modules/zeta_global_sspBidAdapter.js
+++ b/modules/zeta_global_sspBidAdapter.js
@@ -128,8 +128,8 @@ export const spec = {
       id: bidderRequest.bidderRequestId,
       cur: [DEFAULT_CUR],
       imp: imps,
-      site: params.site ? params.site : {},
-      device: {...(bidderRequest.ortb2?.device || {}), ...params.device},
+      site: {...bidderRequest?.ortb2?.site, ...params?.site},
+      device: {...bidderRequest?.ortb2?.device, ...params?.device},
       user: params.user ? params.user : {},
       app: params.app ? params.app : {},
       ext: {
diff --git a/test/spec/modules/zeta_global_sspBidAdapter_spec.js b/test/spec/modules/zeta_global_sspBidAdapter_spec.js
index dfa7c9e6984..a903c91ec18 100644
--- a/test/spec/modules/zeta_global_sspBidAdapter_spec.js
+++ b/test/spec/modules/zeta_global_sspBidAdapter_spec.js
@@ -132,6 +132,9 @@ describe('Zeta Ssp Bid Adapter', function () {
     userIdAsEids: eids,
     timeout: 500,
     ortb2: {
+      site: {
+        inventorypartnerdomain: 'disqus.com'
+      },
       device: {
         sua: {
           mobile: 1,
@@ -709,4 +712,12 @@ describe('Zeta Ssp Bid Adapter', function () {
     expect(payload.ext.tags.nullTag).to.be.undefined;
     expect(payload.ext.tags.complexEmptyTag).to.be.undefined;
   });
+
+  it('Test that site payload param are merged from ortb2 and params', function () {
+    const request = spec.buildRequests(bannerRequest, bannerRequest[0]);
+    const payload = JSON.parse(request.data);
+
+    expect(payload.site.page).to.eql('zetaglobal.com/page');
+    expect(payload.site.inventorypartnerdomain).to.eql('disqus.com');
+  });
 });