diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index a56182af9fa..75d258d9215 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -235,7 +235,7 @@ typedef struct PgStat_TableXactStatus
  * ------------------------------------------------------------
  */
 
-#define PGSTAT_FILE_FORMAT_ID	0x01A5BCAA
+#define PGSTAT_FILE_FORMAT_ID	0x01A5BCAB
 
 typedef struct PgStat_ArchiverStats
 {