diff --git a/modules/sonobiBidAdapter.js b/modules/sonobiBidAdapter.js
index 1ce7665ddfc..f8e338484b2 100644
--- a/modules/sonobiBidAdapter.js
+++ b/modules/sonobiBidAdapter.js
@@ -98,9 +98,16 @@ export const spec = {
       'iqid': bidderSettings.get(BIDDER_CODE, 'storageAllowed') ? JSON.stringify(loadOrCreateFirstPartyData()) : null,
     };
 
+    if (deepAccess(bidderRequest, 'ortb2.experianRtidData') && deepAccess(bidderRequest, 'ortb2.experianRtidKey')) {
+      payload.expData = deepAccess(bidderRequest, 'ortb2.experianRtidData');
+      payload.expKey = deepAccess(bidderRequest, 'ortb2.experianRtidKey');
+    }
+
     const fpd = bidderRequest.ortb2;
 
     if (fpd) {
+      delete fpd.experianRtidData; // Omit the experian data since we already pass this through a dedicated query param
+      delete fpd.experianRtidKey
       payload.fpd = JSON.stringify(fpd);
     }
 
@@ -156,11 +163,6 @@ export const spec = {
       payload.coppa = 0;
     }
 
-    if (deepAccess(bidderRequest, 'ortb2.experianRtidData') && deepAccess(bidderRequest, 'ortb2.experianRtidKey')) {
-      payload.expData = deepAccess(bidderRequest, 'ortb2.experianRtidData');
-      payload.expKey = deepAccess(bidderRequest, 'ortb2.experianRtidKey');
-    }
-
     // If there is no key_maker data, then don't make the request.
     if (isEmpty(data)) {
       return null;
diff --git a/test/spec/modules/sonobiBidAdapter_spec.js b/test/spec/modules/sonobiBidAdapter_spec.js
index 83db7c0a812..fb50a90333d 100644
--- a/test/spec/modules/sonobiBidAdapter_spec.js
+++ b/test/spec/modules/sonobiBidAdapter_spec.js
@@ -501,7 +501,13 @@ describe('SonobiBidAdapter', function () {
       const bidRequests = spec.buildRequests(bidRequest, bidderRequests)
       expect(bidRequests.data.expData).to.equal('IkhlbGxvLCB3b3JsZC4gSGVsbG8sIHdvcmxkLiBIZWxsbywgd29ybGQuIg==');
       expect(bidRequests.data.expKey).to.equal('sovrn-encryption-key-1');
-    })
+    });
+
+    it('should return a properly formatted request with experianRtidData and exexperianRtidKeypKey omitted from fpd', function () {
+      const bidRequests = spec.buildRequests(bidRequest, bidderRequests)
+      expect(bidRequests.data.fpd.indexOf('experianRtidData')).to.equal(-1);
+      expect(bidRequests.data.fpd.indexOf('exexperianRtidKeypKey')).to.equal(-1);
+    });
 
     it('should return null if there is nothing to bid on', function () {
       const bidRequests = spec.buildRequests([{ params: {} }], bidderRequests)