diff --git a/modules/appnexusBidAdapter.js b/modules/appnexusBidAdapter.js
index bb80b6a8588..551bf5401e2 100644
--- a/modules/appnexusBidAdapter.js
+++ b/modules/appnexusBidAdapter.js
@@ -1030,7 +1030,7 @@ function getContextFromPlcmt(ortbPlcmt, ortbStartDelay) {
   }
 
   if (ortbPlcmt === 2) {
-    if (!ortbStartDelay) {
+    if (typeof ortbStartDelay === 'undefined') {
       return;
     }
     if (ortbStartDelay === 0) {
diff --git a/test/spec/modules/appnexusBidAdapter_spec.js b/test/spec/modules/appnexusBidAdapter_spec.js
index 2a277cf1ba7..c2da2f36223 100644
--- a/test/spec/modules/appnexusBidAdapter_spec.js
+++ b/test/spec/modules/appnexusBidAdapter_spec.js
@@ -411,7 +411,7 @@ describe('AppNexusAdapter', function () {
             playerSize: [640, 480],
             context: 'outstream',
             plcmt: 2,
-            startdelay: -1,
+            startdelay: 0,
             mimes: ['video/mp4'],
             skip: 1,
             minduration: 5,
@@ -427,7 +427,7 @@ describe('AppNexusAdapter', function () {
           minduration: 5,
           playback_method: 2,
           skippable: true,
-          context: 9
+          context: 8
         });
         expect(payload.tags[0].video_frameworks).to.deep.equal([1, 4])
       });