diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
index 2b3cf61e75..119997f3ff 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -54,7 +54,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.206 2009/03/26 17:15:35 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.207 2009/04/17 15:33:33 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -97,7 +97,7 @@ double		cpu_operator_cost = DEFAULT_CPU_OPERATOR_COST;
 
 int			effective_cache_size = DEFAULT_EFFECTIVE_CACHE_SIZE;
 
-Cost		disable_cost = 100000000.0;
+Cost		disable_cost = 1.0e10;
 
 bool		enable_seqscan = true;
 bool		enable_indexscan = true;