diff --git a/modules/yieldmoBidAdapter.js b/modules/yieldmoBidAdapter.js
index 725a361789b..22b20511daf 100644
--- a/modules/yieldmoBidAdapter.js
+++ b/modules/yieldmoBidAdapter.js
@@ -60,6 +60,9 @@ export const spec = {
       if (tdid) {
         serverRequest.tdid = tdid;
       }
+      if (request.schain) {
+        serverRequest.schain = JSON.stringify(request.schain);
+      }
     });
     serverRequest.p = '[' + serverRequest.p.toString() + ']';
     return {
diff --git a/test/spec/modules/yieldmoBidAdapter_spec.js b/test/spec/modules/yieldmoBidAdapter_spec.js
index 78cddf44e38..f143caa8c1e 100644
--- a/test/spec/modules/yieldmoBidAdapter_spec.js
+++ b/test/spec/modules/yieldmoBidAdapter_spec.js
@@ -172,6 +172,12 @@ describe('YieldmoAdapter', function () {
         'consentString': 'BOJ/P2HOJ/P2HABABMAAAAAZ+A=='
       }));
     });
+    it('should add schain if it is in the bidRequest', () => {
+      const schain = {'ver': '1.0', 'complete': 1, 'nodes': [{'asi': 'indirectseller.com', 'sid': '00001', 'hp': 1}]};
+      bidArray[0].schain = schain;
+      const request = spec.buildRequests([bidArray[0]]);
+      expect(request.data.schain).equal(JSON.stringify(schain));
+    })
   });
 
   describe('interpretResponse', function () {