diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index cc3d0a8d1bd..7f16598840e 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -9662,7 +9662,7 @@ optimize_straight_join(JOIN *join, table_map remaining_tables)
   memcpy((uchar*) join->best_positions, (uchar*) join->positions,
          sizeof(POSITION)*idx);
   join->join_record_count= record_count;
-  join->best_read= read_time - 0.001;
+  join->best_read= read_time - COST_EPS;
 }
 
 
@@ -11093,7 +11093,7 @@ best_extension_by_limited_search(JOIN      *join,
           memcpy((uchar*) join->best_positions, (uchar*) join->positions,
                  sizeof(POSITION) * (idx + 1));
           join->join_record_count= partial_join_cardinality;
-          join->best_read= current_read_time - 0.001;
+          join->best_read= current_read_time - COST_EPS;
         }
         DBUG_EXECUTE("opt", print_plan(join, idx+1,
                                        current_record_count,