diff --git a/CHANGES.md b/CHANGES.md
index 4d085b3331de..3c548aabda30 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -24,6 +24,7 @@ Change Log
 * Fixed a bug where files with backslashes were not loaded in KMZ files. [#8533](https://github.com/AnalyticalGraphicsInc/cesium/pull/8533)
 * Reduced Cesium bundle size by avoiding unnecessarily importing `Cesium3DTileset` in `Picking.js` [#8532](https://github.com/AnalyticalGraphicsInc/cesium/pull/8532)
 * Fixed WebGL warning message about `EXT_float_blend` being implicitly enabled. [#8534](https://github.com/AnalyticalGraphicsInc/cesium/pull/8534)
+* Fixed a bug where toggling point cloud classification visibility would result in a grey screen on Linux / Nvidia [#8538](https://github.com/AnalyticalGraphicsInc/cesium/pull/8538)
 
 ### 1.65.0 - 2020-01-06
 
diff --git a/Source/Scene/PointCloud.js b/Source/Scene/PointCloud.js
index 93eeec3c47b4..ad5ab762bca0 100644
--- a/Source/Scene/PointCloud.js
+++ b/Source/Scene/PointCloud.js
@@ -1127,8 +1127,8 @@ import StencilConstants from './StencilConstants.js';
         }
 
         if (hasShowStyle) {
-            vs += '    gl_Position *= show; \n' +
-                  '    gl_PointSize *= show; \n';
+            vs += '    gl_Position.w *= float(show); \n' +
+                  '    gl_PointSize *= float(show); \n';
         }
 
         vs += '} \n';