diff --git a/modules/smartadserverBidAdapter.js b/modules/smartadserverBidAdapter.js
index bb9364c72c3..577478e7ab3 100644
--- a/modules/smartadserverBidAdapter.js
+++ b/modules/smartadserverBidAdapter.js
@@ -178,7 +178,7 @@ export const spec = {
    */
   getUserSyncs: function (syncOptions, serverResponses) {
     const syncs = [];
-    if (syncOptions.iframeEnabled && serverResponses.length > 0) {
+    if (syncOptions.iframeEnabled && serverResponses.length > 0 && serverResponses[0].body.cSyncUrl != null) {
       syncs.push({
         type: 'iframe',
         url: serverResponses[0].body.cSyncUrl
diff --git a/modules/smartadserverBidAdapter.md b/modules/smartadserverBidAdapter.md
index 05e29359fd2..7a2381ac9f1 100644
--- a/modules/smartadserverBidAdapter.md
+++ b/modules/smartadserverBidAdapter.md
@@ -110,11 +110,11 @@ Please reach out to your Technical account manager for more information.
 			renderer: {
 				url: 'https://acdn.adnxs.com/video/outstream/ANOutstreamVideo.js',
 				render: function (bid) {
-					bid.renderer.push(() => { 
-						ANOutstreamVideo.renderAd({ 
+					bid.renderer.push(() => {
+						ANOutstreamVideo.renderAd({
 							targetId: bid.adUnitCode,
-							adResponse: bid 
-						}); 
+							adResponse: bid
+						});
 					});
 				}
 			},
@@ -133,4 +133,34 @@ Please reach out to your Technical account manager for more information.
 				}
 			}]
 		};
+```
+
+##  Double Mediatype Setup (Banner & Video)
+
+```
+    var adUnits = [{
+        code: 'prebid_tag_001',
+        mediaTypes: {
+            banner: {
+                sizes: [[300,250]]
+            },
+            video: {
+                context: 'outstream',
+                playerSize: [640, 480]
+            }
+        },
+        bids: [{
+            bidder: 'smartadserver',
+            params: {
+                domain: 'https://prg.smartadserver.com',
+                siteId: 411951,
+                pageId: 1383641,
+                formatId: 84313,
+                target: 'iid=8984466',
+                video: {
+                    protocol: 6, // Stands for "up to VAST 3". For "up to VAST 4" it is 8
+                }
+            }
+        }]
+    }];
 ```
\ No newline at end of file
diff --git a/test/spec/modules/smartadserverBidAdapter_spec.js b/test/spec/modules/smartadserverBidAdapter_spec.js
index 749de43b9af..98cf60dc27a 100644
--- a/test/spec/modules/smartadserverBidAdapter_spec.js
+++ b/test/spec/modules/smartadserverBidAdapter_spec.js
@@ -153,6 +153,22 @@ describe('Smart bid adapter tests', function () {
     }
   };
 
+  var BID_RESPONSE_IFRAME_SYNC_MISSING_CSYNC = {
+    body: {
+      cpm: 12,
+      width: 300,
+      height: 250,
+      creativeId: 'zioeufg',
+      currency: 'GBP',
+      isNetCpm: true,
+      ttl: 300,
+      adUrl: 'http://awesome.fake.url',
+      ad: '< --- awesome script --- >',
+      cSyncUrl: null,
+      isNoAd: false
+    }
+  };
+
   it('Verify build request', function () {
     config.setConfig({
       'currency': {
@@ -302,6 +318,11 @@ describe('Smart bid adapter tests', function () {
       iframeEnabled: true
     }, []);
     expect(syncs).to.have.lengthOf(0);
+
+    syncs = spec.getUserSyncs({
+      iframeEnabled: true
+    }, [BID_RESPONSE_IFRAME_SYNC_MISSING_CSYNC]);
+    expect(syncs).to.have.lengthOf(0);
   });
 
   it('Verifies user sync using dspPixels', function () {