diff --git a/modules/inskinBidAdapter.js b/modules/inskinBidAdapter.js
index 2a55b5280db5..3951e27c8701 100644
--- a/modules/inskinBidAdapter.js
+++ b/modules/inskinBidAdapter.js
@@ -188,7 +188,7 @@ export const spec = {
 
         const id = 'ism_tag_' + Math.floor((Math.random() * 10e16));
         window[id] = {
-          plr_AdSlot: e.source.frameElement,
+          plr_AdSlot: e.source && e.source.frameElement,
           bidId: e.data.bidId,
           bidPrice: bidsMap[e.data.bidId].price,
           serverResponse