diff --git a/doc/api/fs.md b/doc/api/fs.md
index 11e5b2c39fb785..91a34b0e9c4e3b 100644
--- a/doc/api/fs.md
+++ b/doc/api/fs.md
@@ -3628,7 +3628,7 @@ 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