diff --git a/modules/gridBidAdapter.js b/modules/gridBidAdapter.js
index aa00a84273c..9673633a0fe 100644
--- a/modules/gridBidAdapter.js
+++ b/modules/gridBidAdapter.js
@@ -18,7 +18,7 @@ import { getStorageManager } from '../src/storageManager.js';
 
 const BIDDER_CODE = 'grid';
 const ENDPOINT_URL = 'https://grid.bidswitch.net/hbjson';
-const USP_DELETE_DATA_HANDLER = 'https://media.grid.bidswitch.net/uspapi_delete'
+const USP_DELETE_DATA_HANDLER = 'https://media.grid.bidswitch.net/uspapi_delete_c2s'
 
 const SYNC_URL = 'https://x.bidswitch.net/sync?ssp=themediagrid';
 const TIME_TO_LIVE = 360;
@@ -464,16 +464,7 @@ export const spec = {
   },
 
   onDataDeletionRequest: function(data) {
-    const uids = [];
-    const aliases = [spec.code, ...spec.aliases.map((alias) => alias.code || alias)];
-    data.forEach(({ bids }) => bids && bids.forEach(({ bidder, params }) => {
-      if (aliases.includes(bidder) && params && params.uid) {
-        uids.push(params.uid);
-      }
-    }));
-    if (uids.length) {
-      spec.ajaxCall(USP_DELETE_DATA_HANDLER, () => {}, JSON.stringify({ uids }), {contentType: 'application/json', method: 'POST'});
-    }
+    spec.ajaxCall(USP_DELETE_DATA_HANDLER, null, null, {method: 'GET'});
   }
 };
 
diff --git a/test/spec/modules/gridBidAdapter_spec.js b/test/spec/modules/gridBidAdapter_spec.js
index b12083236a2..0611fa68bf8 100644
--- a/test/spec/modules/gridBidAdapter_spec.js
+++ b/test/spec/modules/gridBidAdapter_spec.js
@@ -1559,37 +1559,9 @@ describe('TheMediaGrid Adapter', function () {
     });
 
     it('should send right request on onDataDeletionRequest call', function() {
-      spec.onDataDeletionRequest([{
-        bids: [
-          {
-            bidder: 'grid',
-            params: {
-              uid: 1
-            }
-          },
-          {
-            bidder: 'grid',
-            params: {
-              uid: 2
-            }
-          },
-          {
-            bidder: 'another',
-            params: {
-              uid: 3
-            }
-          },
-          {
-            bidder: 'gridNM',
-            params: {
-              uid: 4
-            }
-          }
-        ],
-      }]);
+      spec.onDataDeletionRequest([{}]);
       expect(ajaxStub.calledOnce).to.equal(true);
-      expect(ajaxStub.firstCall.args[0]).to.equal('https://media.grid.bidswitch.net/uspapi_delete');
-      expect(ajaxStub.firstCall.args[2]).to.equal('{"uids":[1,2,4]}');
+      expect(ajaxStub.firstCall.args[0]).to.equal('https://media.grid.bidswitch.net/uspapi_delete_c2s');
     });
   });