diff --git a/modules/smartadserverBidAdapter.js b/modules/smartadserverBidAdapter.js
index 923223f70c2..8f2cd7e2477 100644
--- a/modules/smartadserverBidAdapter.js
+++ b/modules/smartadserverBidAdapter.js
@@ -135,9 +135,7 @@ export const spec = {
     if (videoParams?.startDelay) {
       return videoParams.startDelay;
     } else if (videoMediaType) {
-      switch (videoMediaType) {
-        case 0:
-          return 1;
+      switch (videoMediaType.startdelay) {
         case -1:
           return 2;
         case -2:
diff --git a/test/spec/modules/smartadserverBidAdapter_spec.js b/test/spec/modules/smartadserverBidAdapter_spec.js
index d76a7b882f0..200cff3f659 100644
--- a/test/spec/modules/smartadserverBidAdapter_spec.js
+++ b/test/spec/modules/smartadserverBidAdapter_spec.js
@@ -1143,6 +1143,28 @@ describe('Smart bid adapter tests', function () {
       expect(requestContent.videoData).to.have.property('videoProtocol').and.to.equal(6);
       expect(requestContent.videoData).to.have.property('adBreak').and.to.equal(3);
     });
+
+    it('should handle value of videoMediaType.startdelay', function () {
+      const request = spec.buildRequests([{
+        bidder: 'smartadserver',
+        mediaTypes: {
+          video: {
+            context: 'outstream',
+            playerSize: [[640, 480]],
+            startdelay: -2
+          }
+        },
+        params: {
+          siteId: 123,
+          pageId: 456,
+          formatId: 78
+        }
+      }]);
+
+      const requestContent = JSON.parse(request[0].data);
+      expect(requestContent).to.have.property('videoData');
+      expect(requestContent.videoData).to.have.property('adBreak').and.to.equal(3);
+    });
   });
 
   describe('External ids tests', function () {