diff --git a/lib/helpers/NodeCache.js b/lib/helpers/NodeCache.js
index 3ddab95ad844f63c53e73afcc3f7df696d2b79c5..ef8ac0eeaafd941692704ebb24b2f57cc79a2314 100644
--- a/lib/helpers/NodeCache.js
+++ b/lib/helpers/NodeCache.js
@@ -17,7 +17,7 @@ define([
       let prim = new Cesium.Primitive({
         geometryInstances: instances,
         appearance: new Cesium.PerInstanceColorAppearance({
-          closed: true,
+          closed: false,
           translucent: false
         })
       });