diff --git a/package.json b/package.json
index 9a039a84..67e0abbd 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
   ],
   "browser" : {
     "canvas" : false,
+    "fs":      false,
     "jsdom":   false,
     "xmldom":  false
   },