diff --git a/ethcore/src/types/executed.rs b/ethcore/src/types/executed.rs
index 657bcdec7..f03a1c26b 100644
--- a/ethcore/src/types/executed.rs
+++ b/ethcore/src/types/executed.rs
@@ -61,7 +61,7 @@ pub struct Executed {
 }
 
 /// Result of executing the transaction.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Debug, Binary)]
 pub enum ExecutionError {
 	/// Returned when there gas paid for transaction execution is
 	/// lower than base gas required.
diff --git a/ethcore/src/types/receipt.rs b/ethcore/src/types/receipt.rs
index c80407363..c851cb867 100644
--- a/ethcore/src/types/receipt.rs
+++ b/ethcore/src/types/receipt.rs
@@ -28,6 +28,7 @@ use log_entry::{LogEntry, LocalizedLogEntry};
 use ipc::binary::BinaryConvertError;
 use std::mem;
 use std::collections::VecDeque;
+use rustc_serialize::hex::FromHex;
 
 /// Information describing execution of a transaction.
 #[derive(Default, Debug, Clone, Binary)]
diff --git a/ethcore/src/types/transaction.rs b/ethcore/src/types/transaction.rs
index 2953ff896..d8454ed7a 100644
--- a/ethcore/src/types/transaction.rs
+++ b/ethcore/src/types/transaction.rs
@@ -29,6 +29,8 @@ use ethjson;
 use ipc::binary::BinaryConvertError;
 use std::mem;
 use std::collections::VecDeque;
+use rustc_serialize::hex::FromHex;
+use util::crypto::KeyPair;
 
 #[derive(Debug, Clone, PartialEq, Eq, Binary)]
 /// Transaction action type.
diff --git a/ipc/codegen/src/serialization.rs b/ipc/codegen/src/serialization.rs
index cf8857325..e8f3d2cd8 100644
--- a/ipc/codegen/src/serialization.rs
+++ b/ipc/codegen/src/serialization.rs
@@ -382,6 +382,8 @@ fn fields_sequence(
 	use syntax::parse::token;
 	use syntax::ast::TokenTree::Token;
 
+	let named_members = fields.iter().any(|f| f.ident.is_some());
+
 	::quasi::parse_expr_panic(&mut ::syntax::parse::new_parser_from_tts(
 		ext_cx.parse_sess(),
 		ext_cx.cfg(),
@@ -389,7 +391,12 @@ fn fields_sequence(
 			let _sp = ext_cx.call_site();
 			let mut tt = ::std::vec::Vec::new();
 			tt.push(Token(_sp, token::Ident(variant_ident.clone())));
-			tt.push(Token(_sp, token::OpenDelim(token::Paren)));
+			if named_members {
+				tt.push(Token(_sp, token::OpenDelim(token::Brace)));
+			}
+			else {
+				tt.push(Token(_sp, token::OpenDelim(token::Paren)));
+			}
 
 			for (idx, field) in fields.iter().enumerate() {
 				if field.ident.is_some() {
@@ -450,8 +457,12 @@ fn fields_sequence(
 				tt.push(Token(_sp, token::CloseDelim(token::Paren)));
 				tt.push(Token(_sp, token::Comma));
 			}
-			tt.push(Token(_sp, token::CloseDelim(token::Paren)));
-
+			if named_members {
+				tt.push(Token(_sp, token::CloseDelim(token::Brace)));
+			}
+			else {
+				tt.push(Token(_sp, token::CloseDelim(token::Paren)));
+			}
 			tt
 		})
 	).unwrap()
@@ -620,7 +631,6 @@ fn binary_expr_variant(
 						.map(|(id, field)|(field.ident.unwrap(), builder.pat().ref_id(id))))
 				.build();
 
-
 			let binary_expr = try!(binary_expr_struct(
 				cx,
 				&builder,
@@ -640,7 +650,7 @@ fn binary_expr_variant(
 						let buffer = &mut buffer[1..];
 						$write_expr
 				}),
-				read: quote_arm!(cx, $pat => { $read_expr } ),
+				read: quote_arm!(cx, $variant_index_ident => { $read_expr } ),
 			})
 		},
 	}
diff --git a/ipc/rpc/src/binary.rs b/ipc/rpc/src/binary.rs
index 2d2bd21b7..58ab38bf1 100644
--- a/ipc/rpc/src/binary.rs
+++ b/ipc/rpc/src/binary.rs
@@ -17,7 +17,7 @@
 //! Binary representation of types
 
 use util::bytes::Populatable;
-use util::numbers::{U256, H256, H2048, Address};
+use util::numbers::{U256, U512, H256, H2048, Address};
 use std::mem;
 use std::collections::VecDeque;
 use std::ops::Range;
@@ -422,6 +422,7 @@ binary_fixed_size!(usize);
 binary_fixed_size!(i32);
 binary_fixed_size!(bool);
 binary_fixed_size!(U256);
+binary_fixed_size!(U512);
 binary_fixed_size!(H256);
 binary_fixed_size!(H2048);
 binary_fixed_size!(Address);
diff --git a/ipc/tests/binary.rs.in b/ipc/tests/binary.rs.in
index 710752237..74dd39c1b 100644
--- a/ipc/tests/binary.rs.in
+++ b/ipc/tests/binary.rs.in
@@ -36,3 +36,9 @@ pub struct DoubleRoot {
 pub struct ReferenceStruct<'a> {
 	pub ref_data: &'a u64,
 }
+
+#[derive(Binary, PartialEq, Debug)]
+pub enum EnumWithStruct {
+	Left,
+	Right { how_much: u64 },
+}
diff --git a/ipc/tests/run.rs b/ipc/tests/run.rs
index c07145f77..cdda5275b 100644
--- a/ipc/tests/run.rs
+++ b/ipc/tests/run.rs
@@ -16,9 +16,7 @@
 
 #![allow(dead_code)]
 
-extern crate bincode;
 extern crate ethcore_ipc as ipc;
-extern crate serde;
 extern crate ethcore_devtools as devtools;
 extern crate semver;
 extern crate nanomsg;