diff --git a/modules/smartadserverBidAdapter.js b/modules/smartadserverBidAdapter.js
index 7edaaa36957..415061d0eda 100644
--- a/modules/smartadserverBidAdapter.js
+++ b/modules/smartadserverBidAdapter.js
@@ -196,7 +196,7 @@ export const spec = {
         sdc: sellerDefinedContext
       };
 
-      const gpid = deepAccess(bid, 'ortb2Imp.ext.gpid', deepAccess(bid, 'ortb2Imp.ext.data.pbadslot', ''));
+      const gpid = deepAccess(bid, 'ortb2Imp.ext.gpid') || deepAccess(bid, 'ortb2Imp.ext.data.pbadslot');
       if (gpid) {
         payload.gpid = gpid;
       }