diff --git a/modules/stroeerCoreBidAdapter.js b/modules/stroeerCoreBidAdapter.js
index e67941ed3a1..35f40953b1f 100644
--- a/modules/stroeerCoreBidAdapter.js
+++ b/modules/stroeerCoreBidAdapter.js
@@ -52,7 +52,6 @@ export const spec = {
     const basePayload = {
       id: generateUUID(),
       ref: refererInfo.ref,
-      ssl: isSecureWindow(),
       mpa: isMainPageAccessible(),
       timeout: bidderRequest.timeout - (Date.now() - bidderRequest.auctionStart),
       url: refererInfo.page,
@@ -147,8 +146,6 @@ export const spec = {
   }
 };
 
-const isSecureWindow = () => getWindowSelf().location.protocol === 'https:';
-
 const isMainPageAccessible = () => {
   try {
     return !!getWindowTop().location.href;
diff --git a/test/spec/modules/stroeerCoreBidAdapter_spec.js b/test/spec/modules/stroeerCoreBidAdapter_spec.js
index 6f4874cef75..a8295c197ef 100644
--- a/test/spec/modules/stroeerCoreBidAdapter_spec.js
+++ b/test/spec/modules/stroeerCoreBidAdapter_spec.js
@@ -407,7 +407,6 @@ describe('stroeerCore bid adapter', function () {
           'timeout': expectedTimeout,
           'ref': 'https://www.example.com/?search=monkey',
           'mpa': true,
-          'ssl': false,
           'url': 'https://www.example.com/monkey/index.html',
           'bids': [{
             'sid': 'NDA=',