diff --git a/runtime/syntax/cpp.vim b/runtime/syntax/cpp.vim
index 78731d7..135b8c9 100644
--- a/runtime/syntax/cpp.vim
+++ b/runtime/syntax/cpp.vim
@@ -2,7 +2,7 @@
 " Language:	C++
 " Current Maintainer:	vim-jp (https://github.com/vim-jp/vim-cpp)
 " Previous Maintainer:	Ken Shan <ccshan@post.harvard.edu>
-" Last Change:	2015 Mar 1
+" Last Change:	2015 May 04
 
 " For version 5.x: Clear all syntax items
 " For version 6.x: Quit when a syntax file was already loaded
@@ -46,7 +46,7 @@
   syn keyword cppConstant	ATOMIC_WCHAR_T_LOCK_FREE ATOMIC_SHORT_LOCK_FREE
   syn keyword cppConstant	ATOMIC_INT_LOCK_FREE ATOMIC_LONG_LOCK_FREE
   syn keyword cppConstant	ATOMIC_LLONG_LOCK_FREE ATOMIC_POINTER_LOCK_FREE
-  syn region cppRawString	matchgroup=cppRawDelimiter start=+\%(u8\|[uLU]\)\=R"\z([[:alnum:]_{}[\]#<>%:;.?*\+\-/\^&|~!=,"']\{,16}\)(+ end=+)\z1"+ contains=@Spell
+  syn region cppRawString	matchgroup=cppRawStringDelimiter start=+\%(u8\|[uLU]\)\=R"\z([[:alnum:]_{}[\]#<>%:;.?*\+\-/\^&|~!=,"']\{,16}\)(+ end=+)\z1"+ contains=@Spell
 endif
 
 " The minimum and maximum operators in GNU C++
@@ -70,7 +70,7 @@
   HiLink cppStructure		Structure
   HiLink cppBoolean		Boolean
   HiLink cppConstant		Constant
-  HiLink cppRawDelimiter	Delimiter
+  HiLink cppRawStringDelimiter	Delimiter
   HiLink cppRawString		String
   delcommand HiLink
 endif