diff --git a/src/backend/utils/misc/pg_controldata.c b/src/backend/utils/misc/pg_controldata.c
index 1b5086a45d..dee6dfc12f 100644
--- a/src/backend/utils/misc/pg_controldata.c
+++ b/src/backend/utils/misc/pg_controldata.c
@@ -90,7 +90,7 @@ pg_control_checkpoint(PG_FUNCTION_ARGS)
 	 * Construct a tuple descriptor for the result row.  This must match this
 	 * function's pg_proc entry!
 	 */
-	tupdesc = CreateTemplateTupleDesc(19, false);
+	tupdesc = CreateTemplateTupleDesc(18, false);
 	TupleDescInitEntry(tupdesc, (AttrNumber) 1, "checkpoint_lsn",
 					   LSNOID, -1, 0);
 	TupleDescInitEntry(tupdesc, (AttrNumber) 2, "redo_lsn",