diff --git a/packages/office-ui-fabric-react/package.json b/packages/office-ui-fabric-react/package.json
index e3842f32aeee9..758ce36787175 100644
--- a/packages/office-ui-fabric-react/package.json
+++ b/packages/office-ui-fabric-react/package.json
@@ -8,6 +8,7 @@
     "type": "git",
     "url": "https://github.com/OfficeDev/office-ui-fabric-react"
   },
+  "sideEffects": false,
   "license": "MIT",
   "scripts": {
     "build": "node ../../scripts/build.js",
@@ -58,4 +59,4 @@
     "react": "^0.14.9 || ^15.0.1-0 || ^16.0.0-0",
     "react-dom": "^0.14.9 || ^15.0.1-0 || ^16.0.0-0"
   }
-}
\ No newline at end of file
+}