diff --git a/syntax/ats.vim b/syntax/ats.vim
index c2ec052..38111f7 100644
--- a/syntax/ats.vim
+++ b/syntax/ats.vim
@@ -29,7 +29,7 @@ syn region  atsComment start="////" end="\%$" contains=atsTodo
 syn match   atsSpecial display contained "\\\(x\x\+\|\o\{1,3}\|.\|$\)"
 syn match   atsSpecial display contained "\\\(u\x\{4}\|U\x\{8}\)"
 syn match   atsSpecial '\\n'
-syn match   atsSpecial '@'
+syn match   atsSpecial '@' '#'
 syn match   atsFormat display "%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlL]\|ll\)\=\([bdiuoxXDOUfeEgGcCsSpn]\|\[\^\=.[^]]*\]\)" contained
 syn region  atsStringDenot start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=atsSpecial,atsFormat,atsSpecial,@Spell
 syn match   atsCharDenot "'[^\\]'"