diff --git a/lib/default-encoding.js b/lib/default-encoding.js
index 4404fd2..3042099 100644
--- a/lib/default-encoding.js
+++ b/lib/default-encoding.js
@@ -1,8 +1,8 @@
 var defaultEncoding
 /* istanbul ignore next */
-if (process.browser) {
+if (global.process && global.process.browser) {
   defaultEncoding = 'utf-8'
-} else if (process.version) {
+} else if (global.process && global.process.version) {
   var pVersionMajor = parseInt(process.version.split('.')[0].slice(1), 10)
 
   defaultEncoding = pVersionMajor >= 6 ? 'utf-8' : 'binary'