diff --git a/ChangeLog b/ChangeLog
index efc060ebcc..03ecc43e07 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon May  9 18:33:05 2011  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* string.c: Improve documentation for String#start_with? and
+	  String#end_with?. fixes #4652
+	  patched by Andrew Grimm <andrew.j.grimm at gmail.com>
+
 Mon May  9 13:49:00 2011  Kenta Murata  <mrkn@mrkn.jp>
 
 	* complex.c (string_to_c_internal): support scientific notation.
diff --git a/string.c b/string.c
index 47429acefc..a6532f4df3 100644
--- a/string.c
+++ b/string.c
@@ -7139,13 +7139,13 @@ rb_str_rpartition(VALUE str, VALUE sep)
  *  call-seq:
  *     str.start_with?([prefix]+)   -> true or false
  *
- *  Returns true if <i>str</i> starts with a prefix given.
+ *  Returns true if <i>str</i> starts with one of the prefixes given.
  *
  *    p "hello".start_with?("hell")               #=> true
  *
- *    # returns true if one of prefix matches.
+ *    # returns true if one of the prefixes matches.
  *    p "hello".start_with?("heaven", "hell")     #=> true
- *    p "hello".start_with?("heaven", "paradice") #=> false
+ *    p "hello".start_with?("heaven", "paradise") #=> false
  *
  *
  *
@@ -7171,7 +7171,7 @@ rb_str_start_with(int argc, VALUE *argv, VALUE str)
  *  call-seq:
  *     str.end_with?([suffix]+)   -> true or false
  *
- *  Returns true if <i>str</i> ends with a suffix given.
+ *  Returns true if <i>str</i> ends with one of the suffixes given.
  */
 
 static VALUE