diff --git a/src/rlp/faces.rs b/src/rlp/faces.rs
index d72f2f96c..392908f16 100644
--- a/src/rlp/faces.rs
+++ b/src/rlp/faces.rs
@@ -37,7 +37,7 @@ pub trait Decoder {
 }
 
 pub trait Decodable: Sized {
-	fn decode<T, D>(decoder: &D) -> Result<T, DecoderError>  where D: Decoder;
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError>  where D: Decoder;
 }
 
 pub trait View<'a, 'view>: Sized {
diff --git a/src/rlp/untrusted_rlp.rs b/src/rlp/untrusted_rlp.rs
index 89c3b664f..fd385b99d 100644
--- a/src/rlp/untrusted_rlp.rs
+++ b/src/rlp/untrusted_rlp.rs
@@ -312,19 +312,27 @@ impl<'a> Decoder for BasicDecoder<'a> {
 }
 
 impl<T> Decodable for T where T: FromBytes {
-	fn decode<R, D>(decoder: &D) -> Result<R, DecoderError>  where D: Decoder {
-		unimplemented!()
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError>  where D: Decoder {
+		decoder.read_value(| bytes | {
+			Ok(try!(T::from_bytes(bytes)))
+		})
 	}
 }
 
 impl<T> Decodable for Vec<T> where T: Decodable {
-	fn decode<R, D>(decoder: &D) -> Result<R, DecoderError>  where D: Decoder {
-		unimplemented!()
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError>  where D: Decoder {
+		decoder.read_list(| decoders | {
+			decoders.iter().map(|d| T::decode(d)).collect()
+		})
 	}
 }
 
 impl Decodable for Vec<u8> {
-	fn decode<R, D>(decoder: &D) -> Result<R, DecoderError>  where D: Decoder {
-		unimplemented!()
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError>  where D: Decoder {
+		decoder.read_value(| bytes | {
+			let mut res = vec![];
+			res.extend(bytes);
+			Ok(res)
+		})
 	}
 }