diff --git a/ChangeLog b/ChangeLog
index 35ebd9fcc0..ebac32ef32 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Sep  8 16:04:02 2014  Koichi Sasada  <ko1@atdot.net>
+
+	* benchmark/bm_app_lc_fizzbuzz.rb: `answer.to_a' does not return
+	  a string, but an array.
+
 Mon Sep  8 13:18:37 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* benchmark/bm_app_lc_fizzbuzz.rb: added.
diff --git a/benchmark/bm_app_lc_fizzbuzz.rb b/benchmark/bm_app_lc_fizzbuzz.rb
index 26283cc3f4..2c9a04987e 100644
--- a/benchmark/bm_app_lc_fizzbuzz.rb
+++ b/benchmark/bm_app_lc_fizzbuzz.rb
@@ -48,5 +48,5 @@ answer = to_array(solution).map do |p|
   to_string(p)
 end
 
-answer_str = answer.to_a
-# puts answer_str
+answer_ary = answer.to_a
+puts answer_ary