diff --git a/modules/adformBidAdapter.js b/modules/adformBidAdapter.js
index 9754653cfe4..1da6042f63a 100644
--- a/modules/adformBidAdapter.js
+++ b/modules/adformBidAdapter.js
@@ -13,13 +13,13 @@ export const spec = {
   buildRequests: function (validBidRequests) {
     var i, l, j, k, bid, _key, _value, reqParams;
     var request = [];
-    var globalParams = [ [ 'adxDomain', 'adx.adform.net' ], [ 'fd', 1 ], [ 'url', null ], [ 'tid', null ] ];
-    var netRevenue = 'net';
+    var globalParams = [ [ 'adxDomain', 'adx.adform.net' ], [ 'fd', 1 ], [ 'url', null ], [ 'tid', null ], [ 'pt', null ] ];
+    var netRevenue = 'gross';
     var bids = JSON.parse(JSON.stringify(validBidRequests));
     for (i = 0, l = bids.length; i < l; i++) {
       bid = bids[i];
-      if (bid.params.priceType === 'gross') {
-        netRevenue = 'gross';
+      if (bid.params.priceType === 'net') {
+        bid.params.pt = netRevenue = 'net';
       }
       for (j = 0, k = globalParams.length; j < k; j++) {
         _key = globalParams[j][0];
diff --git a/modules/adformBidAdapter.md b/modules/adformBidAdapter.md
index b2f67273a18..10ebec37e08 100644
--- a/modules/adformBidAdapter.md
+++ b/modules/adformBidAdapter.md
@@ -21,7 +21,7 @@ Banner and video formats are supported.
                        params: {
                            adxDomain: 'adx.adform.net', //optional
                            mid: '292063',
-                           priceType: 'gross' // default is 'net'
+                           priceType: 'net' // default is 'gross'
                        }
                    }
                ]
diff --git a/test/spec/modules/adformBidAdapter_spec.js b/test/spec/modules/adformBidAdapter_spec.js
index a330f18e685..f3aa735be00 100644
--- a/test/spec/modules/adformBidAdapter_spec.js
+++ b/test/spec/modules/adformBidAdapter_spec.js
@@ -62,8 +62,7 @@ describe('Adform adapter', () => {
         {
           mid: '2',
           someVar: 'someValue',
-          transactionId: '5f33781f-9552-4iuy',
-          priceType: 'gross'
+          transactionId: '5f33781f-9552-4iuy'
         },
         {
           mid: '3',
@@ -166,12 +165,20 @@ describe('Adform adapter', () => {
         assert.equal(result[i].mediaType, expected[i]);
       }
     });
+
+    it('should set default netRevenue as gross', () => {
+      bidRequest.netRevenue = 'gross';
+      const result = spec.interpretResponse(serverResponse, bidRequest);
+      for (let i = 0; i < result.length; i++) {
+        assert.equal(result[i].netRevenue, false);
+      }
+    });
   });
 
   beforeEach(() => {
     let sizes = [[250, 300], [300, 250], [300, 600]];
     let placementCode = ['div-01', 'div-02', 'div-03', 'div-04', 'div-05'];
-    let params = [{ mid: 1, url: 'some// there' }, {adxDomain: null, mid: 2, someVar: 'someValue', priceType: 'gross'}, { adxDomain: null, mid: 3, pdom: 'home' }];
+    let params = [{ mid: 1, url: 'some// there' }, {adxDomain: null, mid: 2, someVar: 'someValue', pt: 'gross'}, { adxDomain: null, mid: 3, pdom: 'home' }];
     bids = [
       {
         adUnitCode: placementCode[0],
@@ -285,7 +292,8 @@ describe('Adform adapter', () => {
       bidder: 'adform',
       bids: bids,
       method: 'GET',
-      url: 'url'
+      url: 'url',
+      netRevenue: 'net'
     };
   });
 });