diff --git a/contrib/pg_upgrade/info.c b/contrib/pg_upgrade/info.c
new file mode 100644
index 74b13e7..caffed3
*** a/contrib/pg_upgrade/info.c
--- b/contrib/pg_upgrade/info.c
*************** gen_db_file_maps(DbInfo *old_db, DbInfo
*** 40,48 ****
--- 40,50 ----
  	int			relnum;
  	int			num_maps = 0;
  
+ /*
  	if (old_db->rel_arr.nrels != new_db->rel_arr.nrels)
  		pg_log(PG_FATAL, "old and new databases \"%s\" have a different number of relations\n",
  			   old_db->db_name);
+ */
  
  	maps = (FileNameMap *) pg_malloc(sizeof(FileNameMap) *
  									 old_db->rel_arr.nrels);