Some more compelling synom examples
diff --git a/src/mac.rs b/src/mac.rs
index 9a648d4..26b3c61 100644
--- a/src/mac.rs
+++ b/src/mac.rs
@@ -283,7 +283,7 @@
         |
         do_parse!(
             punct!("///") >>
-            not!(peek!(tag!("/"))) >>
+            not!(tag!("/")) >>
             content: take_until!("\n") >>
             (format!("///{}", content))
         )