diff --git a/doc/src/sgml/xfunc.sgml b/doc/src/sgml/xfunc.sgml
index 9de7ccc2582d4f2740f4f03ed6d8f56e4984d055..9c15950ccda5460102fc933da31b1f32a229742c 100644
--- a/doc/src/sgml/xfunc.sgml
+++ b/doc/src/sgml/xfunc.sgml
@@ -1954,6 +1954,11 @@ memcpy(destination->data, buffer, 40);
AbsoluteTime
utils/nabstime.h
+
+ bigint (int8)
+ int64
+ postgres.h
+
boolean
bool