diff --git a/src/include/access/rmgrlist.h b/src/include/access/rmgrlist.h
index 9a74721c97..000bcbfdaf 100644
--- a/src/include/access/rmgrlist.h
+++ b/src/include/access/rmgrlist.h
@@ -24,7 +24,7 @@
  * Changes to this list possibly need an XLOG_PAGE_MAGIC bump.
  */
 
-/* symbol name, textual name, redo, desc, identify, startup, cleanup */
+/* symbol name, textual name, redo, desc, identify, startup, cleanup, mask, decode */
 PG_RMGR(RM_XLOG_ID, "XLOG", xlog_redo, xlog_desc, xlog_identify, NULL, NULL, NULL, xlog_decode)
 PG_RMGR(RM_XACT_ID, "Transaction", xact_redo, xact_desc, xact_identify, NULL, NULL, NULL, xact_decode)
 PG_RMGR(RM_SMGR_ID, "Storage", smgr_redo, smgr_desc, smgr_identify, NULL, NULL, NULL, NULL)