diff --git a/man2/chown.2 b/man2/chown.2
index 585fe3720..b730fb75c 100644
--- a/man2/chown.2
+++ b/man2/chown.2
@@ -375,7 +375,7 @@ and the set-group-ID bit is enabled on the parent directory,
 then the group of a new file is made
 the same as that of the parent directory.
 .PP
-As at Linux 2.6.25,
+As at Linux 4.12,
 the
 .IR "\-o\ grpid"
 and