diff --git a/app/extensions/brave/content/scripts/blockCanvasFingerprinting.js b/app/extensions/brave/content/scripts/blockCanvasFingerprinting.js
index feedd39d5a..c3868fc686 100644
--- a/app/extensions/brave/content/scripts/blockCanvasFingerprinting.js
+++ b/app/extensions/brave/content/scripts/blockCanvasFingerprinting.js
@@ -113,7 +113,7 @@ if (chrome.contentSettings.canvasFingerprinting == 'block') {
   })
 
   var webglMethods = ['getSupportedExtensions', 'getParameter', 'getContextAttributes',
-    'getShaderPrecisionFormat', 'getExtension']
+    'getShaderPrecisionFormat', 'getExtension', 'readPixels']
   webglMethods.forEach(function (method) {
     var item = {
       type: 'WebGL',
@@ -121,6 +121,8 @@ if (chrome.contentSettings.canvasFingerprinting == 'block') {
       propName: method
     }
     methods.push(item)
+    item.objName = 'WebGL2RenderingContext',
+    methods.push(item)
   })
 
   var audioBufferMethods = ['copyFromChannel', 'getChannelData']