diff --git a/modules/yieldlabBidAdapter.js b/modules/yieldlabBidAdapter.js
index 9c2b6abf475..30aa4d8b729 100644
--- a/modules/yieldlabBidAdapter.js
+++ b/modules/yieldlabBidAdapter.js
@@ -49,10 +49,16 @@ export const spec = {
       }
     })
 
-    if (bidderRequest && bidderRequest.gdprConsent) {
-      query.gdpr = (typeof bidderRequest.gdprConsent.gdprApplies === 'boolean') ? bidderRequest.gdprConsent.gdprApplies : true
-      if (query.gdpr) {
-        query.consent = bidderRequest.gdprConsent.consentString
+    if (bidderRequest) {
+      if (bidderRequest.refererInfo && bidderRequest.refererInfo.referer) {
+        query.pubref = bidderRequest.refererInfo.referer
+      }
+
+      if (bidderRequest.gdprConsent) {
+        query.gdpr = (typeof bidderRequest.gdprConsent.gdprApplies === 'boolean') ? bidderRequest.gdprConsent.gdprApplies : true
+        if (query.gdpr) {
+          query.consent = bidderRequest.gdprConsent.consentString
+        }
       }
     }
 
diff --git a/test/spec/modules/yieldlabBidAdapter_spec.js b/test/spec/modules/yieldlabBidAdapter_spec.js
index 097f85b9b8d..cc1a47adb53 100644
--- a/test/spec/modules/yieldlabBidAdapter_spec.js
+++ b/test/spec/modules/yieldlabBidAdapter_spec.js
@@ -96,6 +96,20 @@ describe('yieldlabBidAdapter', function () {
       expect(request.url).to.include('extraParam=true&foo=bar')
     })
 
+    const refererRequest = spec.buildRequests(bidRequests, {
+      refererInfo: {
+        canonicalUrl: undefined,
+        numIframes: 0,
+        reachedTop: true,
+        referer: 'https://www.yieldlab.de/test?with=querystring',
+        stack: ['https://www.yieldlab.de/test?with=querystring']
+      }
+    })
+
+    it('passes encoded referer to bid request', function () {
+      expect(refererRequest.url).to.include('pubref=https%3A%2F%2Fwww.yieldlab.de%2Ftest%3Fwith%3Dquerystring')
+    })
+
     const gdprRequest = spec.buildRequests(bidRequests, {
       gdprConsent: {
         consentString: 'BN5lERiOMYEdiAKAWXEND1AAAAE6DABACMA',