diff --git a/src/testing/counted.rs b/src/testing/counted.rs
index 68e5f5e..af3e7ab 100644
--- a/src/testing/counted.rs
+++ b/src/testing/counted.rs
@@ -81,12 +81,10 @@ impl<'a> Resolver<'a, TestContextCounted> for CountedResolver<'a> {
 }
 
 pub trait Delayable<'a>: Mentionable<'a, TestContextCounted> + Sized {
-    fn delay(self: Rc<Self>) -> CastResult<'a, TestContextCounted, Self>;
-}
-
-impl<'a, A: Mentionable<'a, TestContextCounted>> Delayable<'a> for A {
     fn delay(self: Rc<Self>) -> CastResult<'a, TestContextCounted, Self> {
         let factory = self.factory();
         TypelessMentionable::from_typed(self).cast_full(factory, CountedResolver::new)
     }
 }
+
+impl<'a, A: Mentionable<'a, TestContextCounted>> Delayable<'a> for A {}