diff --git a/src/adapters/sharethrough.js b/src/adapters/sharethrough.js
index e2f582dbaae..fd5c3072816 100644
--- a/src/adapters/sharethrough.js
+++ b/src/adapters/sharethrough.js
@@ -4,7 +4,7 @@ var bidfactory = require('../bidfactory.js');
 var ajax = require('../ajax.js').ajax;
 
 const STR_BIDDER_CODE = "sharethrough";
-const STR_VERSION = "1.1.0";
+const STR_VERSION = "1.2.0";
 
 var SharethroughAdapter = function SharethroughAdapter() {
 
@@ -22,10 +22,16 @@ var SharethroughAdapter = function SharethroughAdapter() {
       const bidRequest = bids[i];
       str.placementCodeSet[bidRequest.placementCode] = bidRequest;
       const scriptUrl = _buildSharethroughCall(bidRequest);
-      str.ajax(scriptUrl, $$PREBID_GLOBAL$$.strcallback, undefined, {withCredentials: true});
+      str.ajax(scriptUrl, _createCallback(bidRequest), undefined, {withCredentials: true});
     }
   }
 
+  function _createCallback(bidRequest) {
+    return (bidResponse) => {
+      _strcallback(bidRequest, bidResponse);
+    };
+  }
+
   function _buildSharethroughCall(bid) {
     const pkey = utils.getBidIdParameter('pkey', bid.params);
 
@@ -39,17 +45,10 @@ var SharethroughAdapter = function SharethroughAdapter() {
     return url;
   }
 
-  $$PREBID_GLOBAL$$.strcallback = function(bidResponse) {
+  function _strcallback(bidObj, bidResponse) {
     try {
       bidResponse = JSON.parse(bidResponse);
-    } catch (e) {
-      utils.logError(e);
-      return;
-    }
-
-    const bidId = bidResponse.bidId;
-    const bidObj = utils.getBidRequest(bidId);
-    try {
+      const bidId = bidResponse.bidId;
       const bid = bidfactory.createBid(1, bidObj);
       bid.bidderCode = STR_BIDDER_CODE;
       bid.cpm = bidResponse.creatives[0].cpm;
@@ -84,7 +83,7 @@ var SharethroughAdapter = function SharethroughAdapter() {
     } catch (e) {
       _handleInvalidBid(bidObj);
     }
-  };
+  }
 
   function _handleInvalidBid(bidObj) {
     const bid = bidfactory.createBid(2, bidObj);
diff --git a/test/spec/adapters/sharethrough_spec.js b/test/spec/adapters/sharethrough_spec.js
index 03eb7aaba49..24884b87ffb 100644
--- a/test/spec/adapters/sharethrough_spec.js
+++ b/test/spec/adapters/sharethrough_spec.js
@@ -63,17 +63,8 @@ describe('sharethrough adapter', () => {
 
       sinon.assert.calledTwice(adapter.str.ajax);
 
-      expect(firstBidUrl).to.contain(adapter.str.STR_BTLR_HOST + '/header-bid/v1?bidId=bidId1&placement_key=aaaa1111&hbVersion=%24prebid.version%24&strVersion=1.1.0&hbSource=prebid&');
-      expect(secondBidUrl).to.contain(adapter.str.STR_BTLR_HOST + '/header-bid/v1?bidId=bidId2&placement_key=bbbb2222&hbVersion=%24prebid.version%24&strVersion=1.1.0&hbSource=prebid&');
-    });
-
-  });
-
-  describe('strcallback', () => {
-
-    it('should exist and be a function', () => {
-      let shit = sandbox.stub(pbjs, 'strcallback');
-      expect(pbjs.strcallback).to.exist.and.to.be.a('function');
+      expect(firstBidUrl).to.contain(adapter.str.STR_BTLR_HOST + '/header-bid/v1?bidId=bidId1&placement_key=aaaa1111&hbVersion=%24prebid.version%24&strVersion=1.2.0&hbSource=prebid&');
+      expect(secondBidUrl).to.contain(adapter.str.STR_BTLR_HOST + '/header-bid/v1?bidId=bidId2&placement_key=bbbb2222&hbVersion=%24prebid.version%24&strVersion=1.2.0&hbSource=prebid&');
     });
 
   });
@@ -82,16 +73,18 @@ describe('sharethrough adapter', () => {
 
     let firstBid;
     let secondBid;
+    let server;
 
     beforeEach(() => {
       sandbox.stub(bidManager, 'addBidResponse');
+      server = sinon.fakeServer.create();
 
       pbjs._bidsRequested.push(bidderRequest);
       adapter.str.placementCodeSet['foo'] = {};
       adapter.str.placementCodeSet['bar'] = {};
       // respond
 
-      let bidderReponse1 = {
+      let bidderResponse1 = {
                               "adserverRequestId": "40b6afd5-6134-4fbb-850a-bb8972a46994",
                               "bidId": "bidId1",
                               "creatives": [
@@ -104,7 +97,7 @@ describe('sharethrough adapter', () => {
                               "stxUserId": ""
                             };
 
-      let bidderReponse2 = {
+      let bidderResponse2 = {
                               "adserverRequestId": "40b6afd5-6134-4fbb-850a-bb8972a46994",
                               "bidId": "bidId2",
                               "creatives": [
@@ -117,13 +110,20 @@ describe('sharethrough adapter', () => {
                               "stxUserId": ""
                             };
 
-      pbjs.strcallback(JSON.stringify(bidderReponse1));
-      pbjs.strcallback(JSON.stringify(bidderReponse2));
+      server.respondWith(/aaaa1111/,JSON.stringify(bidderResponse1));
+      server.respondWith(/bbbb2222/,JSON.stringify(bidderResponse2));
+      adapter.callBids(bidderRequest);
+
+      server.respond();
 
       firstBid = bidManager.addBidResponse.firstCall.args[1];
       secondBid = bidManager.addBidResponse.secondCall.args[1];
     });
 
+    afterEach(() => {
+      server.restore();
+    });
+
     it('should add a bid object for each bid', () => {
       sinon.assert.calledTwice(bidManager.addBidResponse);
     });