diff --git a/doc/api/process.markdown b/doc/api/process.markdown
index 647d7ddaad8..04d2a164a01 100644
--- a/doc/api/process.markdown
+++ b/doc/api/process.markdown
@@ -273,7 +273,7 @@ Getter/setter to set what is displayed in 'ps'.
 
 ### process.arch
 
-What processor architecture you're running on. `'arm'`, `'ia32'`, etc.
+What processor architecture you're running on: `'arm'`, `'ia32'`, or `'x64'`.
 
     console.log('This processor architecture is ' + process.arch);