diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 8814c00221d..7939d743a84 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -2389,7 +2389,7 @@ XLogFileInit(XLogSegNo logsegno, bool *use_existent, bool use_lock)
  *
  * destsegno: identify segment to be created.
  *
- * srcTLI, srclog, srcseg: identify segment to be copied (could be from
+ * srcTLI, srcsegno: identify segment to be copied (could be from
  *		a different timeline)
  *
  * Currently this is only used during recovery, and so there are no locking