diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
new file mode 100644
index cc5eedf..cf1cfb4
*** a/src/include/pg_config_manual.h
--- b/src/include/pg_config_manual.h
***************
*** 14,21 ****
   */
  
  /*
!  * This is default value for wal_segment_size to be used at initdb when run
!  * without --walsegsize option. Must be a valid segment size.
   */
  #define DEFAULT_XLOG_SEG_SIZE	(16*1024*1024)
  
--- 14,21 ----
   */
  
  /*
!  * This is the default value for wal_segment_size to be used at initdb when run
!  * without the --wal-segsize option. Must be a valid segment size.
   */
  #define DEFAULT_XLOG_SEG_SIZE	(16*1024*1024)