diff --git a/modules/zeta_global_sspBidAdapter.js b/modules/zeta_global_sspBidAdapter.js
index 295108f31b4..af73865c484 100644
--- a/modules/zeta_global_sspBidAdapter.js
+++ b/modules/zeta_global_sspBidAdapter.js
@@ -381,6 +381,10 @@ function provideMediaType(zetaBid, bid, bidRequest) {
 
 function clearEmpties(o) {
   for (let k in o) {
+    if (o[k] === null) {
+      delete o[k];
+      continue;
+    }
     if (!o[k] || typeof o[k] !== 'object') {
       continue;
     }
diff --git a/test/spec/modules/zeta_global_sspBidAdapter_spec.js b/test/spec/modules/zeta_global_sspBidAdapter_spec.js
index b06a6700ebf..81617b93d3c 100644
--- a/test/spec/modules/zeta_global_sspBidAdapter_spec.js
+++ b/test/spec/modules/zeta_global_sspBidAdapter_spec.js
@@ -49,6 +49,12 @@ describe('Zeta Ssp Bid Adapter', function () {
     },
     tags: {
       someTag: 444,
+      emptyTag: {},
+      nullTag: null,
+      complexEmptyTag: {
+        empty: {},
+        nullValue: null
+      }
     },
     sid: 'publisherId',
     tagid: 'test_tag_id',
@@ -657,4 +663,15 @@ describe('Zeta Ssp Bid Adapter', function () {
     expect(payload.device.w).to.not.be.undefined;
     expect(payload.device.h).to.not.be.undefined;
   });
+
+  it('Test that all empties are removed', function () {
+    const request = spec.buildRequests(bannerRequest, bannerRequest[0]);
+    const payload = JSON.parse(request.data);
+
+    expect(payload.ext.tags.someTag).to.eql(444);
+
+    expect(payload.ext.tags.emptyTag).to.be.undefined;
+    expect(payload.ext.tags.nullTag).to.be.undefined;
+    expect(payload.ext.tags.complexEmptyTag).to.be.undefined;
+  });
 });