diff --git a/src/backend/access/transam/xact.c b/src/backend/access/transam/xact.c
index 2b103f42559..463a4984047 100644
--- a/src/backend/access/transam/xact.c
+++ b/src/backend/access/transam/xact.c
@@ -2247,8 +2247,9 @@ PrepareTransaction(void)
 	AtEOXact_Files();
 	AtEOXact_ComboCid();
 	AtEOXact_HashTables(true);
-	/* don't call AtEOXact_PgStat here */
+	/* don't call AtEOXact_PgStat here; we fixed pgstat state above */
 	AtEOXact_Snapshot(true);
+	pgstat_report_xact_timestamp(0);
 
 	CurrentResourceOwner = NULL;
 	ResourceOwnerDelete(TopTransactionResourceOwner);