diff --git a/ChangeLog b/ChangeLog
index 7db1a30ab4..550e5f4174 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
-Thu Apr 25 01:21:51 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Thu Apr 25 01:22:41 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/tracer.rb (get_line): simply read by File.readlines.
 
 	* lib/debug.rb (script_lines): get source lines from SCRIPT_LINES__ or
 	  read from the file.
diff --git a/lib/tracer.rb b/lib/tracer.rb
index 4266abf1b6..4dd2aafa7b 100644
--- a/lib/tracer.rb
+++ b/lib/tracer.rb
@@ -155,16 +155,8 @@ class Tracer
     end
 
     unless list = SCRIPT_LINES__[file]
-      begin
-        f = File::open(file)
-        begin
-          SCRIPT_LINES__[file] = list = f.readlines
-        ensure
-          f.close
-        end
-      rescue
-        SCRIPT_LINES__[file] = list = []
-      end
+      list = File.readlines(file) rescue []
+      SCRIPT_LINES__[file] = list
     end
 
     if l = list[line - 1]