diff --git a/doc/src/sgml/pgstattuple.sgml b/doc/src/sgml/pgstattuple.sgml
index b31fee9b0e..40a9669c90 100644
--- a/doc/src/sgml/pgstattuple.sgml
+++ b/doc/src/sgml/pgstattuple.sgml
@@ -438,17 +438,17 @@ approx_free_percent | 2.09
Percentage of table scanned
- tuple_count
+ approx_tuple_count
bigint
Number of live tuples (estimated)
- tuple_len
+ approx_tuple_len
bigint
Total length of live tuples in bytes (estimated)
- tuple_percent
+ approx_tuple_percent
float8
Percentage of live tuples