diff --git a/ChangeLog b/ChangeLog
index 4ac5250317..e24c70bbdc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Oct 13 01:41:38 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* regparse.c (parse_char_class): also need to check the type of token
+	  after raw hyphen in regexp class, because the charcter code area
+	  is union'ed with the property of TK_CHAR_TYPE.
+	  reported by Bushi Zhang at [ruby-core:47115] [Backport #6853].
+
 Sat Oct 13 01:39:46 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/ruby/test_regexp.rb
diff --git a/regparse.c b/regparse.c
index 1489f0e58d..2b4c0bf5bb 100644
--- a/regparse.c
+++ b/regparse.c
@@ -4491,7 +4491,10 @@ parse_char_class(Node** np, OnigToken* tok, UChar** src, UChar* end,
 
 	if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_ALLOW_DOUBLE_RANGE_OP_IN_CC)) {
 	  CC_ESC_WARN(env, (UChar* )"-");
-	  goto sb_char;   /* [0-9-a] is allowed as [0-9\-a] */
+	  if (tok->type == TK_CHAR_TYPE)
+	    goto next_class;   /* [0-9-\s] is allowed as [0-9\-\s] */
+	  else
+	    goto sb_char;   /* [0-9-a] is allowed as [0-9\-a] */
 	}
 	r = ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS;
 	goto err;
diff --git a/version.h b/version.h
index 64d445fb10..648bdae4d7 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.3"
-#define RUBY_PATCHLEVEL 287
+#define RUBY_PATCHLEVEL 288
 
 #define RUBY_RELEASE_DATE "2012-10-13"
 #define RUBY_RELEASE_YEAR 2012