diff --git a/man2/fork.2 b/man2/fork.2
index 798eec5d1..94f83198f 100644
--- a/man2/fork.2
+++ b/man2/fork.2
@@ -140,6 +140,12 @@ Memory mappings that have been marked with the
 flag are not inherited across a
 .BR fork ().
 .IP *
+Memory in mappings that have been marked with the
+.BR madvise (2)
+.B MADV_WIPEONFORK
+flag is zeroed in the child after a
+.BR fork ().
+.IP *
 The termination signal of the child is always
 .B SIGCHLD
 (see