diff --git a/taskwiki/viewport.py b/taskwiki/viewport.py
index 0c74c2c..c20c447 100644
--- a/taskwiki/viewport.py
+++ b/taskwiki/viewport.py
@@ -200,7 +200,7 @@ class ViewPort(object):
 
     @classmethod
     def parse_line(cls, cache, number):
-        return re.search(regexp.GENERIC_VIEWPORT, cache.buffer[number])
+        return re.search(regexp.VIEWPORT[cache.markup_syntax], cache.buffer[number])
 
     @classmethod
     def from_line(cls, number, cache):