diff --git a/doc/api/os.md b/doc/api/os.md
index e77238021c6085..bb25c3f6cc2b1b 100644
--- a/doc/api/os.md
+++ b/doc/api/os.md
@@ -31,11 +31,10 @@ added: v0.5.0
 * Returns: {string}
 
 The `os.arch()` method returns a string identifying the operating system CPU
-architecture *for which the Node.js binary was compiled*.
+architecture for which the Node.js binary was compiled.
 
 The current possible values are: `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,
-`'mipsel'`, `'ppc'`, `'ppc64'`, `'s390'`, `'s390x'`, `'x32'`, `'x64'`,  and
-`'x86'`.
+`'mipsel'`, `'ppc'`, `'ppc64'`, `'s390'`, `'s390x'`, `'x32'`, and `'x64'`.
 
 Equivalent to [`process.arch`][].
 
diff --git a/doc/api/process.md b/doc/api/process.md
index 60545ff06281a1..2eecdc832af3ba 100644
--- a/doc/api/process.md
+++ b/doc/api/process.md
@@ -432,9 +432,11 @@ added: v0.5.0
 
 * {string}
 
-The `process.arch` property returns a String identifying the processor
-architecture that the Node.js process is currently running on. For instance
-`'arm'`, `'ia32'`, or `'x64'`.
+The `process.arch` property returns a string identifying the operating system CPU
+architecture for which the Node.js binary was compiled.
+
+The current possible values are: `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,
+`'mipsel'`, `'ppc'`, `'ppc64'`, `'s390'`, `'s390x'`, `'x32'`, and `'x64'`.
 
 ```js
 console.log(`This processor architecture is ${process.arch}`);