diff --git a/modules/colossussspBidAdapter.js b/modules/colossussspBidAdapter.js
index c1560680a6e..75e73ffda89 100644
--- a/modules/colossussspBidAdapter.js
+++ b/modules/colossussspBidAdapter.js
@@ -214,7 +214,7 @@ export const spec = {
   },
 
   getUserSyncs: (syncOptions, serverResponses, gdprConsent, uspConsent) => {
-    let syncType = syncOptions.iframeEnabled ? 'html' : 'hms.gif';
+    let syncType = syncOptions.iframeEnabled ? 'iframe' : 'image';
     let syncUrl = G_URL_SYNC + `/${syncType}?pbjs=1`;
     if (gdprConsent && gdprConsent.consentString) {
       if (typeof gdprConsent.gdprApplies === 'boolean') {
diff --git a/test/spec/modules/colossussspBidAdapter_spec.js b/test/spec/modules/colossussspBidAdapter_spec.js
index 8b06868390a..71e94f0da32 100644
--- a/test/spec/modules/colossussspBidAdapter_spec.js
+++ b/test/spec/modules/colossussspBidAdapter_spec.js
@@ -299,8 +299,8 @@ describe('ColossussspAdapter', function () {
       expect(userSync).to.be.an('array').with.lengthOf(1);
       expect(userSync[0].type).to.exist;
       expect(userSync[0].url).to.exist;
-      expect(userSync[0].type).to.be.equal('hms.gif');
-      expect(userSync[0].url).to.be.equal('https://sync.colossusssp.com/hms.gif?pbjs=1&gdpr=0&gdpr_consent=xxx&ccpa_consent=1YN-&coppa=0');
+      expect(userSync[0].type).to.be.equal('image');
+      expect(userSync[0].url).to.be.equal('https://sync.colossusssp.com/image?pbjs=1&gdpr=0&gdpr_consent=xxx&ccpa_consent=1YN-&coppa=0');
     });
   });
 });