diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 6356085785..30934d3ddf 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -551,7 +551,7 @@ typedef union PgStat_Msg
  * ------------------------------------------------------------
  */
 
-#define PGSTAT_FILE_FORMAT_ID	0x01A5BC9C
+#define PGSTAT_FILE_FORMAT_ID	0x01A5BC9D
 
 /* ----------
  * PgStat_StatDBEntry			The collector's data per database