diff --git a/modules/eplanningBidAdapter.js b/modules/eplanningBidAdapter.js
index e230858487f..2216ab329b0 100644
--- a/modules/eplanningBidAdapter.js
+++ b/modules/eplanningBidAdapter.js
@@ -24,6 +24,7 @@ const VAST_INSTREAM = 1;
 const VAST_OUTSTREAM = 2;
 const VAST_VERSION_DEFAULT = 3;
 const DEFAULT_SIZE_VAST = '640x480';
+const MAX_LEN_URL = 255;
 
 export const spec = {
   code: BIDDER_CODE,
@@ -60,7 +61,7 @@ export const spec = {
       params = {
         rnd: rnd,
         e: spaces.str,
-        ur: pageUrl || FILE,
+        ur: cutUrl(pageUrl || FILE),
         pbv: '$prebid.version$',
         ncb: '1',
         vs: spaces.vs
@@ -70,7 +71,7 @@ export const spec = {
       }
 
       if (referrerUrl) {
-        params.fr = referrerUrl;
+        params.fr = cutUrl(referrerUrl);
       }
 
       if (bidderRequest && bidderRequest.gdprConsent) {
@@ -491,6 +492,17 @@ function visibilityHandler(obj) {
   }
 }
 
+function cutUrl (url) {
+  if (url.length > MAX_LEN_URL) {
+    url = url.split('?')[0];
+    if (url.length > MAX_LEN_URL) {
+      url = url.slice(0, MAX_LEN_URL);
+    }
+  }
+
+  return url;
+}
+
 function registerAuction(storageID) {
   let value;
   try {
diff --git a/test/spec/modules/eplanningBidAdapter_spec.js b/test/spec/modules/eplanningBidAdapter_spec.js
index cb8393a29b8..1a6cfd7afe4 100644
--- a/test/spec/modules/eplanningBidAdapter_spec.js
+++ b/test/spec/modules/eplanningBidAdapter_spec.js
@@ -729,11 +729,46 @@ describe('E-Planning Adapter', function () {
       expect(ur).to.equal(bidderRequest.refererInfo.page);
     });
 
+    it('should return ur parameter without params query string when current window url length is greater than 255', function () {
+      let bidderRequestParams = bidderRequest;
+
+      bidderRequestParams.refererInfo.page = refererUrl + '?param=' + 'x'.repeat(255);
+      const ur = spec.buildRequests(bidRequests, bidderRequest).data.ur;
+      expect(ur).to.equal(refererUrl);
+    });
+
+    it('should return ur parameter with a length of 255 when url length is greater than 255', function () {
+      let bidderRequestParams = bidderRequest;
+      let url_255_characters = 'https://localhost/abc' + '/subse'.repeat(39);
+      let refererUrl = url_255_characters + '/ext'.repeat(5) + '?param=' + 'x'.repeat(15);
+
+      bidderRequestParams.refererInfo.page = refererUrl;
+      const ur = spec.buildRequests(bidRequests, bidderRequest).data.ur;
+      expect(ur).to.equal(url_255_characters);
+    });
+
     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(refererUrl);
     });
+    it('should return fr parameter without params query string when ref length is greater than 255', function () {
+      let bidderRequestParams = bidderRequest;
+
+      bidderRequestParams.refererInfo.ref = refererUrl + '?param=' + 'x'.repeat(255);
+      const fr = spec.buildRequests(bidRequests, bidderRequest).data.fr;
+      expect(fr).to.equal(refererUrl);
+    });
+
+    it('should return fr parameter with a length of 255 when url length is greater than 255', function () {
+      let bidderRequestParams = bidderRequest;
+      let url_255_characters = 'https://localhost/abc' + '/subse'.repeat(39);
+      let refererUrl = url_255_characters + '/ext'.repeat(5) + '?param=' + 'x'.repeat(15);
+
+      bidderRequestParams.refererInfo.ref = refererUrl;
+      const fr = spec.buildRequests(bidRequests, bidderRequest).data.fr;
+      expect(fr).to.equal(url_255_characters);
+    });
 
     it('should return crs parameter with document charset', function () {
       let expected;