diff --git a/man2/getpid.2 b/man2/getpid.2
index 48151642a..5b9650cd2 100644
--- a/man2/getpid.2
+++ b/man2/getpid.2
@@ -127,6 +127,7 @@ always invoke the actual system call, rather than returning a cached value.
 .SH SEE ALSO
 .BR clone (2),
 .BR fork (2),
+.BR gettid (2),
 .BR kill (2),
 .BR exec (3),
 .BR mkstemp (3),