diff --git a/ChangeLog b/ChangeLog
index 7d7dca2843..fb99bf3d0e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jun 22 17:55:48 2012  Koichi Sasada  <ko1@atdot.net>
+
+	* test/ruby/test_backtrace.rb: decrease recursion depth
+	  to reduce consuming stack size.
+
 Fri Jun 22 13:36:50 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* random.c (random_init, random_load): cannot initialize frozen object
diff --git a/test/ruby/test_backtrace.rb b/test/ruby/test_backtrace.rb
index 11edd7644f..cfdbd72d9f 100644
--- a/test/ruby/test_backtrace.rb
+++ b/test/ruby/test_backtrace.rb
@@ -33,7 +33,7 @@ class TestBacktrace < Test::Unit::TestCase
     assert_equal(nil, cs[4])
 
     #
-    max = 10
+    max = 7
     rec = lambda{|n|
       if n > 0
         1.times{