diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 6ee5712..48d320a 100644
*** a/src/backend/access/transam/xlog.c
--- b/src/backend/access/transam/xlog.c
*************** do_pg_start_backup(const char *backupids
*** 9974,9980 ****
  		} while (!gotUniqueStartpoint);
  
  		XLByteToSeg(startpoint, _logSegNo);
! 		XLogFileName(xlogfilename, ThisTimeLineID, _logSegNo);
  
  		/*
  		 * Construct tablespace_map file
--- 9974,9980 ----
  		} while (!gotUniqueStartpoint);
  
  		XLByteToSeg(startpoint, _logSegNo);
! 		XLogFileName(xlogfilename, starttli, _logSegNo);
  
  		/*
  		 * Construct tablespace_map file