diff --git a/aio/package.json b/aio/package.json
index f7a65f1ec2..6396d0e221 100644
--- a/aio/package.json
+++ b/aio/package.json
@@ -34,7 +34,7 @@
     "generate-zips": "node ./tools/example-zipper/generateZips",
     "sw-manifest": "ngu-sw-manifest --dist dist --in ngsw-manifest.json --out dist/ngsw-manifest.json",
     "sw-copy": "cp node_modules/@angular/service-worker/bundles/worker-basic.min.js dist/",
-    "postinstall": "node --eval \"const fs=require('fs'), sh=require('shelljs'), PATCH_LOCK='node_modules/@angular/cli/models/webpack-configs/.patched'; if (!fs.existsSync(PATCH_LOCK)) { sh.touch(PATCH_LOCK); sh.exec('patch -p0 -i tools/cli-patches/ngo-loader.patch && patch -p0 -i node_modules/purify/angular-cli.patch'); }\"",
+    "postinstall": "node --eval \"const fs=require('fs'), sh=require('shelljs'), PATCH_LOCK='node_modules/@angular/cli/models/webpack-configs/.patched'; if (!fs.existsSync(PATCH_LOCK)) { sh.touch(PATCH_LOCK); sh.exec('patch -p0 -i tools/cli-patches/ngo-loader.patch && patch -p0 -i node_modules/purify/angular-cli.patch && patch -p0 -i tools/cli-patches/uglify-config.patch'); }\"",
     "build-ie-polyfills": "webpack -p src/ie-polyfills.js src/generated/ie-polyfills.min.js"
   },
   "private": true,
diff --git a/aio/tools/cli-patches/uglify-config.patch b/aio/tools/cli-patches/uglify-config.patch
new file mode 100644
index 0000000000..921c3c431b
--- /dev/null
+++ b/aio/tools/cli-patches/uglify-config.patch
@@ -0,0 +1,11 @@
+--- node_modules/@angular/cli/models/webpack-configs/production.js	2017-05-24 15:36:43.000000000 -0700
++++ node_modules/@angular/cli/models/webpack-configs/production.js	2017-05-24 15:37:04.000000000 -0700
+@@ -81,7 +81,7 @@
+             new (require("purify/purify-webpack-plugin"))(),
+             new webpack.optimize.UglifyJsPlugin({
+                 mangle: { screw_ie8: true },
+-                compress: { screw_ie8: true, warnings: buildOptions.verbose },
++                compress: { screw_ie8: true, warnings: buildOptions.verbose, pure_getters: true },
+                 sourceMap: buildOptions.sourcemaps
+             })
+         ].concat(extraPlugins)