diff --git a/modules/sonobiBidAdapter.js b/modules/sonobiBidAdapter.js
index e1b51affd09..edc4f255d18 100644
--- a/modules/sonobiBidAdapter.js
+++ b/modules/sonobiBidAdapter.js
@@ -329,7 +329,7 @@ function _validateFloor(bid) {
 }
 
 function _validateGPID(bid) {
-  const gpid = deepAccess(bid, 'ortb2Imp.ext.data.pbadslot') || deepAccess(getGptSlotInfoForAdUnitCode(bid.adUnitCode), 'gptSlot') || bid.params.ad_unit;
+  const gpid = deepAccess(bid, 'ortb2Imp.ext.gpid') || deepAccess(bid, 'ortb2Imp.ext.data.pbadslot') || deepAccess(getGptSlotInfoForAdUnitCode(bid.adUnitCode), 'gptSlot') || bid.params.ad_unit;
 
   if (gpid) {
     return `gpid=${gpid},`
diff --git a/test/spec/modules/sonobiBidAdapter_spec.js b/test/spec/modules/sonobiBidAdapter_spec.js
index c7f954cfdcf..75da1983f0c 100644
--- a/test/spec/modules/sonobiBidAdapter_spec.js
+++ b/test/spec/modules/sonobiBidAdapter_spec.js
@@ -302,6 +302,29 @@ describe('SonobiBidAdapter', function () {
         }
       }
     },
+    {
+
+      'bidder': 'sonobi',
+      'params': {
+        'keywords': 'sports,news,some_other_keyword',
+        'placement_id': '1a2b3c4d5e6f1a2b3c4d',
+        'sizes': [[300, 250], [300, 600]],
+        'floor': '1.25',
+      },
+      'adUnitCode': 'adunit-code-42',
+      'sizes': [[300, 250], [300, 600]],
+      'bidId': '30b31c1838de1g',
+      ortb2Imp: {
+        ext: {
+          gpid: '/123123/gpt_publisher/adunit-code-42'
+        }
+      },
+      mediaTypes: {
+        banner: {
+          sizes: [[300, 250], [300, 600]]
+        }
+      }
+    },
     {
       'bidder': 'sonobi',
       'params': {
@@ -343,6 +366,7 @@ describe('SonobiBidAdapter', function () {
 
     let keyMakerData = {
       '30b31c1838de1f': '1a2b3c4d5e6f1a2b3c4d|640x480|f=1.25,gpid=/123123/gpt_publisher/adunit-code-1,c=v,pm=1:2:3,p=2,pl=3,',
+      '30b31c1838de1g': '1a2b3c4d5e6f1a2b3c4d|300x250,300x600|f=1.25,gpid=/123123/gpt_publisher/adunit-code-42,c=d,',
       '30b31c1838de1d': '1a2b3c4d5e6f1a2b3c4e|300x250,300x600|f=0.42,gpid=/123123/gpt_publisher/adunit-code-3,c=d,',
       '/7780971/sparks_prebid_LB|30b31c1838de1e': '300x250,300x600|gpid=/7780971/sparks_prebid_LB,c=d,',
     };