diff --git a/ChangeLog b/ChangeLog
index 05bb688308..d3b20624c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Mon Mar  5 11:51:48 2012  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* ext/bigdecimal/lib/bigdecimal/math.rb: remove description about
+	  BigMath#log. patched by Sho Hashimoto [ruby-dev:45307] [Bug #6112]
+
+	* string.c (str_byteslice): fix typo.
+
 Sun Mar  4 23:21:10 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* parse.y (parser_tokadd_string): regexp engine doesn't need
diff --git a/ext/bigdecimal/lib/bigdecimal/math.rb b/ext/bigdecimal/lib/bigdecimal/math.rb
index 03c59bfccb..16cf9c8731 100644
--- a/ext/bigdecimal/lib/bigdecimal/math.rb
+++ b/ext/bigdecimal/lib/bigdecimal/math.rb
@@ -7,7 +7,6 @@ require 'bigdecimal'
 #   sin (x, prec)
 #   cos (x, prec)
 #   atan(x, prec)  Note: |x|<1, x=0.9999 may not converge.
-#   log (x, prec)
 #   PI  (prec)
 #   E   (prec) == exp(1.0,prec)
 #
diff --git a/string.c b/string.c
index d53c3b4f34..dd4e3674b0 100644
--- a/string.c
+++ b/string.c
@@ -4111,7 +4111,7 @@ str_byte_aref(VALUE str, VALUE indx)
  *     "hello".byteslice(-1)    #=> "o"
  *     "hello".byteslice(1, 2)  #=> "el"
  *     "\x80\u3042".byteslice(1, 3) #=> "\u3042"
- *     "\x03\u3042\xff".byteslice(1..3) #=> "\u3942"
+ *     "\x03\u3042\xff".byteslice(1..3) #=> "\u3042"
  */
 
 static VALUE