diff --git a/syntax/eo.vim b/syntax/eo.vim
index 88a9e91..1a99416 100644
--- a/syntax/eo.vim
+++ b/syntax/eo.vim
@@ -24,7 +24,7 @@ syn keyword    eoStatements return
 
 " syn match      className               "\(\w\+\.\)\+\w\+"
 
-syn match      attributes              "@\(inout\|out\|in\|property\|class\|free\|constructor\|virtual\|auto\|extern\|beta\|protected\|const\|optional\|nullable\|warn_unused\|private\|hot\)"
+syn match      attributes              "@\(inout\|out\|in\|property\|class\|free\|constructor\|virtual\|auto\|empty\|extern\|beta\|protected\|const\|optional\|nullable\|warn_unused\|private\|hot\)"
 
 syn match eoLabelMatch   "\w\+:" contains=eoClassBodyLabels
 syn match eoBlockOpener  "\w\+\s*{" contains=eoClassBodyBlockOpener,eoInnerBlockOpener