diff --git a/src/rstd/inlining.rs b/src/rstd/inlining.rs
index d6e8a13..4db2515 100644
--- a/src/rstd/inlining.rs
+++ b/src/rstd/inlining.rs
@@ -46,24 +46,13 @@ impl<D: ?Sized + Deserializer> InlineableDeserializer for &mut D {
     }
 }
 
-pub trait InlineableDeCtx<'a, Ctx: Context<'a>>: Sized {
-    type D: InlineableDeserializer;
-
-    fn iread_n<A, E>(
-        self,
-        n: usize,
-        ok: impl FnOnce(&[u8]) -> A,
-        err: impl FnOnce(&[u8]) -> E,
-    ) -> Result<(A, Self), E>;
-}
+pub trait InlineableDeCtx<'a, Ctx: Context<'a>>: InlineableDeserializer {}
 
 struct InlineableDeCtxT<'a: 'c, 'c, Ctx: Context<'a>> {
     dectx: &'c mut dyn DeCtx<'a, Ctx>,
 }
 
-impl<'a: 'c, 'c, Ctx: Context<'a>> InlineableDeCtx<'a, Ctx> for InlineableDeCtxT<'a, 'c, Ctx> {
-    type D = &'c mut dyn Deserializer;
-
+impl<'a: 'c, 'c, Ctx: Context<'a>> InlineableDeserializer for InlineableDeCtxT<'a, 'c, Ctx> {
     fn iread_n<A, E>(
         self,
         n: usize,
@@ -77,6 +66,8 @@ impl<'a: 'c, 'c, Ctx: Context<'a>> InlineableDeCtx<'a, Ctx> for InlineableDeCtxT
     }
 }
 
+impl<'a: 'c, 'c, Ctx: Context<'a>> InlineableDeCtx<'a, Ctx> for InlineableDeCtxT<'a, 'c, Ctx> {}
+
 pub type IParseResult<'a, Ctx, F, I> =
     Result<(Mtbl<'a, Ctx, F>, I), <F as Factory<'a, Ctx>>::ParseError>;