diff --git a/Source/Scene/Vector3DTileClampedPolylines.js b/Source/Scene/Vector3DTileClampedPolylines.js
index f87a4096991f..6324acb685c4 100644
--- a/Source/Scene/Vector3DTileClampedPolylines.js
+++ b/Source/Scene/Vector3DTileClampedPolylines.js
@@ -723,7 +723,7 @@ function initialize(polylines) {
 
         promise
           .then(function () {
-            finishVertexArray(polylines, frameState);
+            finishVertexArray(polylines, frameState.context);
             resolve(polylines);
           })
           .catch(function (e) {