diff --git a/lib/prop_parser.js b/lib/prop_parser.js
index a1e9a23..036d282 100644
--- a/lib/prop_parser.js
+++ b/lib/prop_parser.js
@@ -44,6 +44,9 @@ var _kmasks = {
     amods: _keywords[ 'public' ]
         | _keywords[ 'protected' ]
         | _keywords[ 'private' ],
+
+    'virtual': _keywords[ 'abstract' ]
+        | _keywords[ 'virtual' ],
 };