--- a/src/backend/backup/backup_manifest.c
+++ b/src/backend/backup/backup_manifest.c
@@ -253,7 +253,7 @@ AddWALInfoToBackupManifest(backup_manifest_info *manifest, XLogRecPtr startptr,
                if (first_wal_range && endtli != entry->tli)
                        ereport(ERROR,
                                        errmsg("expected end timeline %u but found timeline %u",
-                                                  starttli, entry->tli));
+                                                  endtli, entry->tli));