diff --git a/modules/appnexusAstBidAdapter.js b/modules/appnexusAstBidAdapter.js
index e8441d9a003..0cb372bcc55 100644
--- a/modules/appnexusAstBidAdapter.js
+++ b/modules/appnexusAstBidAdapter.js
@@ -197,7 +197,7 @@ function AppnexusAstAdapter() {
       const bid = createBid(status, tag);
       if (type === 'native') bid.mediaType = 'native';
       if (type === 'video') bid.mediaType = 'video';
-      if (type === 'video-outstream') bid.mediaType = 'video-outstream';
+      if (ad && ad.renderer_url) bid.mediaType = 'video-outstream';
 
       if (bid.adId in bidRequests) {
         const placement = bidRequests[bid.adId].placementCode;