diff --git a/modules/openxOrtbBidAdapter.js b/modules/openxOrtbBidAdapter.js
index a7a8d53a624..bbe0e827b8e 100644
--- a/modules/openxOrtbBidAdapter.js
+++ b/modules/openxOrtbBidAdapter.js
@@ -252,6 +252,10 @@ function getFloor(bid, mediaType) {
 }
 
 function interpretResponse(resp, req) {
+  if (!resp.body) {
+    resp.body = {nbr: 0};
+  }
+
   // pass these from request to the responses for use in userSync
   if (req.data.ext) {
     if (req.data.ext.delDomain) {
@@ -301,7 +305,7 @@ function interpretResponse(resp, req) {
       }
 
       if (respBody.ext && respBody.ext.paf) {
-        response.meta.paf = respBody.ext.paf;
+        response.meta.paf = Object.assign({}, respBody.ext.paf);
         response.meta.paf.content_id = utils.deepAccess(bid, 'ext.paf.content_id');
       }
 
diff --git a/test/spec/modules/openxOrtbBidAdapter_spec.js b/test/spec/modules/openxOrtbBidAdapter_spec.js
index b3f63d9c23a..3fe9b627d04 100644
--- a/test/spec/modules/openxOrtbBidAdapter_spec.js
+++ b/test/spec/modules/openxOrtbBidAdapter_spec.js
@@ -952,7 +952,7 @@ describe('OpenxRtbAdapter', function () {
     let bidResponse;
     let bid;
 
-    context('when there is no response', function () {
+    context('when there is an nbr response', function () {
       let bids;
       beforeEach(function () {
         bidRequestConfigs = [{
@@ -983,6 +983,37 @@ describe('OpenxRtbAdapter', function () {
       });
     });
 
+    context('when there is no response', function () {
+      let bids;
+      beforeEach(function () {
+        bidRequestConfigs = [{
+          bidder: 'openx',
+          params: {
+            unit: '12345678',
+            delDomain: 'test-del-domain'
+          },
+          adUnitCode: 'adunit-code',
+          mediaTypes: {
+            banner: {
+              sizes: [[300, 250], [300, 600]],
+            },
+          },
+          bidId: 'test-bid-id',
+          bidderRequestId: 'test-bidder-request-id',
+          auctionId: 'test-auction-id'
+        }];
+
+        bidRequest = spec.buildRequests(bidRequestConfigs, {refererInfo: {}})[0];
+
+        bidResponse = ''; // Unknown error
+        bids = spec.interpretResponse({body: bidResponse}, bidRequest);
+      });
+
+      it('should not return any bids', function () {
+        expect(bids.length).to.equal(0);
+      });
+    });
+
     context('when there is a response, the common response properties', function () {
       beforeEach(function () {
         bidRequestConfigs = [{