diff --git a/modules/eplanningBidAdapter.js b/modules/eplanningBidAdapter.js
index a4b4f2d6728..ac5ba659ad7 100644
--- a/modules/eplanningBidAdapter.js
+++ b/modules/eplanningBidAdapter.js
@@ -44,7 +44,7 @@ export const spec = {
       params = {};
     } else {
       url = 'https://' + (urlConfig.sv || DEFAULT_SV) + '/hb/1/' + urlConfig.ci + '/' + dfpClientId + '/' + getDomain(pageUrl) + '/' + sec;
-      const referrerUrl = bidderRequest.refererInfo.referer.reachedTop ? encodeURIComponent(window.top.document.referrer) : encodeURIComponent(bidderRequest.refererInfo.referer);
+      const referrerUrl = bidderRequest.refererInfo.referer.reachedTop ? window.top.document.referrer : bidderRequest.refererInfo.referer;
 
       if (storage.hasLocalStorage()) {
         registerViewabilityAllBids(bidRequests);
@@ -53,7 +53,7 @@ export const spec = {
       params = {
         rnd: rnd,
         e: spaces.str,
-        ur: encodeURIComponent(pageUrl || FILE),
+        ur: pageUrl || FILE,
         r: 'pbjs',
         pbv: '$prebid.version$',
         ncb: '1',
@@ -317,11 +317,13 @@ function getViewabilityTracker() {
   }
 
   function isNotHiddenByNonFriendlyIframe() {
-    return (window === window.top) || window.frameElement;
+    try { return (window === window.top) || window.frameElement; } catch (e) {}
   }
 
   function defineContext(e) {
-    context = e && window.document.body.contains(e) ? window : (window.top.document.body.contains(e) ? top : undefined);
+    try {
+      context = e && window.document.body.contains(e) ? window : (window.top.document.body.contains(e) ? top : undefined);
+    } catch (err) {}
     return context;
   }
 
@@ -357,7 +359,7 @@ function getViewabilityTracker() {
   }
 
   function itIsNotHiddenByTabFocus() {
-    return getContext().top.document.hasFocus();
+    try { return getContext().top.document.hasFocus(); } catch (e) {}
   }
 
   function isDefined(e) {
diff --git a/test/spec/modules/eplanningBidAdapter_spec.js b/test/spec/modules/eplanningBidAdapter_spec.js
index ff03bf033af..f267680b46b 100644
--- a/test/spec/modules/eplanningBidAdapter_spec.js
+++ b/test/spec/modules/eplanningBidAdapter_spec.js
@@ -343,13 +343,13 @@ describe('E-Planning Adapter', function () {
 
     it('should return ur parameter with current window url', function () {
       const ur = spec.buildRequests(bidRequests, bidderRequest).data.ur;
-      expect(ur).to.equal(encodeURIComponent(bidderRequest.refererInfo.referer));
+      expect(ur).to.equal(bidderRequest.refererInfo.referer);
     });
 
     it('should return fr parameter when there is a referrer', function () {
       const request = spec.buildRequests(bidRequests, bidderRequest);
       const dataRequest = request.data;
-      expect(dataRequest.fr).to.equal(encodeURIComponent(refererUrl));
+      expect(dataRequest.fr).to.equal(refererUrl);
     });
 
     it('should return crs parameter with document charset', function () {