diff --git a/wg-event-gen/src/gen.rs b/wg-event-gen/src/gen.rs
index a34821f..7b0a9d4 100644
--- a/wg-event-gen/src/gen.rs
+++ b/wg-event-gen/src/gen.rs
@@ -54,8 +54,6 @@ pub(crate) fn gen_events(
             }
             (None, Some(cur)) => listeners.added(&cur),
             (Some(prev), None) => listeners.removed(&prev),
-            (None, Some(_cur)) => (),
-            (Some(_prev), None) => (),
             fail => {
                 println!("{:?}", fail);
                 unreachable!()