diff --git a/src/fs-shim.js b/src/fs-shim.js
index 7350230..cb45169 100644
--- a/src/fs-shim.js
+++ b/src/fs-shim.js
@@ -1,5 +1,4 @@
 /* eslint-disable */
-const fs = (typeof window === 'object' || typeof self === 'object') ? null
-  : eval('require("fs")')
+const fs = (typeof process !== 'object' && (typeof window === 'object' || typeof self === 'object')) ? null : eval('require("fs")')
 
 module.exports = fs