diff --git a/man2/pidfd_open.2 b/man2/pidfd_open.2
index e8ba3769a..8a4a7aafa 100644
--- a/man2/pidfd_open.2
+++ b/man2/pidfd_open.2
@@ -118,6 +118,15 @@ has not been explicitly set to
 .BR SIG_IGN
 (see
 .BR sigaction (2));
+.IP *
+the
+.BR SA_NOCLDSTOP
+flag was not specified while establishing a handler for
+.BR SIGCHLD
+or while setting the disposition of that signal to
+.BR SIG_DFL
+(see
+.BR sigaction (2));
 and
 .IP *
 the zombie process was not reaped elsewhere in the program