diff --git a/ChangeLog b/ChangeLog
index 8ac35bcb58..279334b140 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Tue Aug  3 14:19:42 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* lib/rdoc/ri/driver.rb (setup_pager): no need to check the existence
+	  of pagers. the following code checks whether they are executable or
+	  not.
+
 Tue Aug  3 12:03:57 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
 
 	* tool/runruby.rb: no purelib.
diff --git a/lib/rdoc/ri/driver.rb b/lib/rdoc/ri/driver.rb
index 90fbc7c7a2..7ae73a490e 100644
--- a/lib/rdoc/ri/driver.rb
+++ b/lib/rdoc/ri/driver.rb
@@ -1034,7 +1034,7 @@ Options may also be set in the 'RI' environment variable.
     pagers = [ENV['RI_PAGER'], ENV['PAGER'], 'pager', 'less', 'more']
 
     pagers.compact.uniq.each do |pager|
-      next unless File.exist? pager
+      next unless pager
 
       io = IO.popen pager, "w" rescue next