diff --git a/doc/api/fs.md b/doc/api/fs.md
index e0e8960e7f3a26..74e68bef69f0eb 100644
--- a/doc/api/fs.md
+++ b/doc/api/fs.md
@@ -4158,7 +4158,7 @@ to be notified of filesystem changes.
   directories.
 * On SunOS systems (including Solaris and SmartOS), this uses [`event ports`][].
 * On Windows systems, this feature depends on [`ReadDirectoryChangesW`][].
-* On Aix systems, this feature depends on [`AHAFS`][], which must be enabled.
+* On AIX systems, this feature depends on [`AHAFS`][], which must be enabled.
 * On IBM i systems, this feature is not supported.
 
 If the underlying functionality is not available for some reason, then