diff --git a/syntax/ats.vim b/syntax/ats.vim
index 975cd1d..999d020 100644
--- a/syntax/ats.vim
+++ b/syntax/ats.vim
@@ -5,8 +5,6 @@ if !exists('main_syntax')
   let main_syntax = 'ats'
 endif
 
-syn match atsIncludes '\v^#include.*$'
-
 "
 " lexical
 "
@@ -52,6 +50,7 @@ syn match   atsFloat display contained "\d\+e[-+]\=\d\+\>"
 syn match   atsOctalError display contained "0\o*[89]\d*"
 syn case match
 
+syn region atsIncludes oneline start='\v^\#include' end='"'
 syn match   atsIdent "[A-Za-z_][0-9A-Za-z_\']*"
 
 " embedded C