diff --git a/internal/datastore/postgres/revisions.go b/internal/datastore/postgres/revisions.go
index 9ab0b7012b..5cc0f1cf28 100644
--- a/internal/datastore/postgres/revisions.go
+++ b/internal/datastore/postgres/revisions.go
@@ -33,9 +33,8 @@ const (
 	//   %[4] Quantization period (in nanoseconds)
 	//   %[5] Name of snapshot column
 	querySelectRevision = `
-	WITH selected AS (SELECT COALESCE(
-		(SELECT %[1]s FROM %[2]s WHERE %[3]s >= TO_TIMESTAMP(FLOOR(EXTRACT(EPOCH FROM NOW() AT TIME ZONE 'utc') * 1000000000 / %[4]d) * %[4]d / 1000000000) AT TIME ZONE 'utc' ORDER BY %[3]s ASC LIMIT 1),
-		NULL
+	WITH selected AS (SELECT (
+		(SELECT %[1]s FROM %[2]s WHERE %[3]s >= TO_TIMESTAMP(FLOOR(EXTRACT(EPOCH FROM NOW() AT TIME ZONE 'utc') * 1000000000 / %[4]d) * %[4]d / 1000000000) AT TIME ZONE 'utc' ORDER BY %[3]s ASC LIMIT 1)
 	) as xid)
 	SELECT selected.xid,
 	COALESCE((SELECT %[5]s FROM %[2]s WHERE %[1]s = selected.xid), (SELECT pg_current_snapshot())),