diff --git a/modules/kargoBidAdapter.js b/modules/kargoBidAdapter.js
index 2c33c3f61d1..6a1c1cf94b0 100644
--- a/modules/kargoBidAdapter.js
+++ b/modules/kargoBidAdapter.js
@@ -116,7 +116,11 @@ export const spec = {
       };
 
       if (meta.mediaType == VIDEO) {
-        bidResponse.vastXml = adUnit.adm;
+        if (adUnit.admUrl) {
+          bidResponse.vastUrl = adUnit.admUrl;
+        } else {
+          bidResponse.vastXml = adUnit.adm;
+        }
       }
 
       bidResponses.push(bidResponse);
diff --git a/test/spec/modules/kargoBidAdapter_spec.js b/test/spec/modules/kargoBidAdapter_spec.js
index 565b83704fa..525c00d655c 100644
--- a/test/spec/modules/kargoBidAdapter_spec.js
+++ b/test/spec/modules/kargoBidAdapter_spec.js
@@ -556,6 +556,17 @@ describe('kargo adapter tests', function () {
           mediaType: 'video',
           metadata: {},
           currency: 'EUR'
+        },
+        6: {
+          id: 'bar',
+          cpm: 2.5,
+          adm: '',
+          admUrl: 'https://foobar.com/vast_adm',
+          width: 300,
+          height: 250,
+          mediaType: 'video',
+          metadata: {},
+          currency: 'EUR'
         }
       }}, {
         currency: 'USD',
@@ -584,6 +595,11 @@ describe('kargo adapter tests', function () {
           params: {
             placementId: 'bar'
           }
+        }, {
+          bidId: 6,
+          params: {
+            placementId: 'bar'
+          }
         }]
       });
       var expectation = [{
@@ -664,6 +680,22 @@ describe('kargo adapter tests', function () {
         meta: {
           mediaType: 'video'
         }
+      }, {
+        requestId: '6',
+        cpm: 2.5,
+        width: 300,
+        height: 250,
+        ad: '',
+        vastUrl: 'https://foobar.com/vast_adm',
+        ttl: 300,
+        creativeId: 'bar',
+        dealId: undefined,
+        netRevenue: true,
+        currency: 'EUR',
+        mediaType: 'video',
+        meta: {
+          mediaType: 'video'
+        }
       }];
       expect(resp).to.deep.equal(expectation);
     });