diff --git a/man/man4/zfs.4 b/man/man4/zfs.4
index 3b3fbcabeb..8cef04cda9 100644
--- a/man/man4/zfs.4
+++ b/man/man4/zfs.4
@@ -1225,7 +1225,7 @@ the active I/O limit is linearly
 interpolated.
 .No See Sx ZFS I/O SCHEDULER .
 .
-.It Sy zfs_vdev_async_write_max_active Ns = Ns Sy 30 Pq uint
+.It Sy zfs_vdev_async_write_max_active Ns = Ns Sy 10 Pq uint
 Maximum asynchronous write I/O operations active to each device.
 .No See Sx ZFS I/O SCHEDULER .
 .