diff --git a/src/filters/index.js b/src/filters/index.js
index 9c8a75f..f427bc4 100644
--- a/src/filters/index.js
+++ b/src/filters/index.js
@@ -9,6 +9,11 @@
  * @namespace PIXI.filters
  */
 module.exports = {
+    // expose some internal filters...
+    AbstractFilter:     require('../core/renderers/webgl/filters/AbstractFilter'),
+    FXAAFilter:         require('../core/renderers/webgl/filters/FXAAFilter'),
+    SpriteMaskFilter:   require('../core/renderers/webgl/filters/SpriteMaskFilter'),
+    // add the rest!
     AsciiFilter:        require('./ascii/AsciiFilter'),
     BloomFilter:        require('./bloom/BloomFilter'),
     BlurFilter:         require('./blur/BlurFilter'),