diff --git a/man2/gettid.2 b/man2/gettid.2
index 32ae22ced..90510eb88 100644
--- a/man2/gettid.2
+++ b/man2/gettid.2
@@ -85,6 +85,7 @@ is the same as its thread ID (the value returned by
 .BR clone (2),
 .BR fcntl (2),
 .BR fork (2),
+.BR getpid (2),
 .BR get_robust_list (2),
 .\" .BR kcmp (2),
 .BR ioprio_set (2),