diff --git a/modules/priceFloors.js b/modules/priceFloors.js
index 92aecb0ca50..1936c445c0a 100644
--- a/modules/priceFloors.js
+++ b/modules/priceFloors.js
@@ -151,8 +151,9 @@ export function getFirstMatchingFloor(floorData, bidObject, responseObject = {})
     matchingRule
   };
   // use adUnit floorMin as priority!
-  if (typeof deepAccess(bidObject, 'ortb2Imp.ext.prebid.floorMin') === 'number') {
-    matchingData.floorMin = bidObject.ortb2Imp.ext.prebid.floorMin;
+  const floorMin = deepAccess(bidObject, 'ortb2Imp.ext.prebid.floors.floorMin');
+  if (typeof floorMin === 'number') {
+    matchingData.floorMin = floorMin;
   }
   matchingData.matchingFloor = Math.max(matchingData.floorMin, matchingData.floorRuleValue);
   // save for later lookup if needed
diff --git a/test/spec/modules/priceFloors_spec.js b/test/spec/modules/priceFloors_spec.js
index f232631d73d..b2ae8efba32 100644
--- a/test/spec/modules/priceFloors_spec.js
+++ b/test/spec/modules/priceFloors_spec.js
@@ -286,7 +286,7 @@ describe('the price floors module', function () {
       let myBidRequest = { ...basicBidRequest };
 
       // should take adunit floormin first even if lower
-      utils.deepSetValue(myBidRequest, 'ortb2Imp.ext.prebid.floorMin', 2.2);
+      utils.deepSetValue(myBidRequest, 'ortb2Imp.ext.prebid.floors.floorMin', 2.2);
       expect(getFirstMatchingFloor(inputFloorData, myBidRequest, { mediaType: 'banner', size: '*' })).to.deep.equal({
         floorMin: 2.2,
         floorRuleValue: 1.0,
@@ -297,7 +297,7 @@ describe('the price floors module', function () {
       delete inputFloorData.matchingInputs;
 
       // should take adunit floormin if higher
-      utils.deepSetValue(myBidRequest, 'ortb2Imp.ext.prebid.floorMin', 3.0);
+      utils.deepSetValue(myBidRequest, 'ortb2Imp.ext.prebid.floors.floorMin', 3.0);
       expect(getFirstMatchingFloor(inputFloorData, myBidRequest, { mediaType: 'banner', size: '*' })).to.deep.equal({
         floorMin: 3.0,
         floorRuleValue: 1.0,