diff --git a/share/man/man4/ufm.4 b/share/man/man4/ufm.4
index 21dc46e986c..0d076e3e4e4 100644
--- a/share/man/man4/ufm.4
+++ b/share/man/man4/ufm.4
@@ -59,6 +59,10 @@ device can be used by userland applications.
 .It Pa /dev/ufm0
 blocking device node
 .El
+.Sh SEE ALSO
+.Xr ohci 4 ,
+.Xr uhci 4 ,
+.Xr usb 4
 .Sh AUTHORS
 .An -nosplit
 The