diff --git a/runtime/syntax/eruby.vim b/runtime/syntax/eruby.vim
index 22a8453..46e5704 100644
--- a/runtime/syntax/eruby.vim
+++ b/runtime/syntax/eruby.vim
@@ -22,7 +22,7 @@
   let s:lines = getline(1)."\n".getline(2)."\n".getline(3)."\n".getline(4)."\n".getline(5)."\n".getline("$")
   let b:eruby_subtype = matchstr(s:lines,'eruby_subtype=\zs\w\+')
   if b:eruby_subtype == ''
-    let b:eruby_subtype = matchstr(substitute(expand("%:t"),'\c\%(\.erb\)\+$','',''),'\.\zs\w\+$')
+    let b:eruby_subtype = matchstr(substitute(expand("%:t"),'\c\%(\.erb\|\.eruby\)\+$','',''),'\.\zs\w\+$')
   endif
   if b:eruby_subtype == 'rhtml'
     let b:eruby_subtype = 'html'
@@ -55,31 +55,20 @@
 
 syn cluster erubyRegions contains=erubyOneLiner,erubyBlock,erubyExpression,erubyComment
 
-exe 'syn region  erubyOneLiner   matchgroup=erubyDelimiter start="^%\{1,'.b:eruby_nest_level.'\}%\@!"    end="$"     contains=@rubyTop	     containedin=ALLBUT,@erbRegions keepend oneline'
-exe 'syn region  erubyBlock      matchgroup=erubyDelimiter start="<%\{1,'.b:eruby_nest_level.'\}%\@!-\=" end="-\=%>" contains=@rubyTop	     containedin=ALLBUT,@erbRegions'
-exe 'syn region  erubyExpression matchgroup=erubyDelimiter start="<%\{1,'.b:eruby_nest_level.'\}="       end="-\=%>" contains=@rubyTop	     containedin=ALLBUT,@erbRegions'
-exe 'syn region  erubyComment    matchgroup=erubyDelimiter start="<%\{1,'.b:eruby_nest_level.'\}#"       end="-\=%>" contains=rubyTodo,@Spell containedin=ALLBUT,@erbRegions keepend'
+exe 'syn region  erubyOneLiner   matchgroup=erubyDelimiter start="^%\{1,'.b:eruby_nest_level.'\}%\@!"    end="$"     contains=@rubyTop	     containedin=ALLBUT,@erubyRegions keepend oneline'
+exe 'syn region  erubyBlock      matchgroup=erubyDelimiter start="<%\{1,'.b:eruby_nest_level.'\}%\@!-\=" end="-\=%\@<!%\{1,'.b:eruby_nest_level.'\}>" contains=@rubyTop        containedin=ALLBUT,@erubyRegions keepend'
+exe 'syn region  erubyExpression matchgroup=erubyDelimiter start="<%\{1,'.b:eruby_nest_level.'\}="       end="-\=%\@<!%\{1,'.b:eruby_nest_level.'\}>" contains=@rubyTop        containedin=ALLBUT,@erubyRegions keepend'
+exe 'syn region  erubyComment    matchgroup=erubyDelimiter start="<%\{1,'.b:eruby_nest_level.'\}#"       end="-\=%\@<!%\{1,'.b:eruby_nest_level.'\}>" contains=rubyTodo,@Spell containedin=ALLBUT,@erubyRegions keepend'
 
 " Define the default highlighting.
-" For version 5.7 and earlier: only when not done already
-" For version 5.8 and later: only when an item doesn't have highlighting yet
-if version >= 508 || !exists("did_eruby_syntax_inits")
-  if version < 508
-    let did_ruby_syntax_inits = 1
-    command -nargs=+ HiLink hi link <args>
-  else
-    command -nargs=+ HiLink hi def link <args>
-  endif
 
-  HiLink erubyDelimiter		Delimiter
-  HiLink erubyComment		Comment
+hi def link erubyDelimiter		Delimiter
+hi def link erubyComment		Comment
 
-  delcommand HiLink
-endif
 let b:current_syntax = 'eruby'
 
 if main_syntax == 'eruby'
   unlet main_syntax
 endif
 
-" vim: nowrap sw=2 sts=2 ts=8 :
+" vim: nowrap sw=2 sts=2 ts=8: