diff --git a/ipc/codegen/src/serialization.rs b/ipc/codegen/src/serialization.rs
index c9f6b847c..79608b8f4 100644
--- a/ipc/codegen/src/serialization.rs
+++ b/ipc/codegen/src/serialization.rs
@@ -155,6 +155,16 @@ struct BinaryExpressions {
 	pub read: P<ast::Expr>,
 }
 
+fn replace_qualified(s: &str) -> String {
+	if let Some(pos) = s.find("<") {
+		let mut source = s.to_owned();
+		source.insert(pos, ':');
+		source.insert(pos, ':');
+		source
+	}
+	else { s.to_owned() }
+}
+
 fn binary_expr_struct(
 	cx: &ExtCtxt,
 	builder: &aster::AstBuilder,
@@ -169,7 +179,7 @@ fn binary_expr_struct(
 			&::syntax::print::pprust::ty_to_string(&codegen::strip_ptr(&field.ty)));
 
 		let field_type_ident_qualified = builder.id(
-			&::syntax::print::pprust::ty_to_string(&codegen::strip_ptr(&field.ty)).replace("<", "::<"));
+			replace_qualified(&::syntax::print::pprust::ty_to_string(&codegen::strip_ptr(&field.ty))));
 
 		let index_ident = builder.id(format!("__field{}", index));
 		value_ident.and_then(|x| {
@@ -205,7 +215,7 @@ fn binary_expr_struct(
 			&::syntax::print::pprust::ty_to_string(&codegen::strip_ptr(&field.ty)));
 
 		let field_type_ident_qualified = builder.id(
-			&::syntax::print::pprust::ty_to_string(&codegen::strip_ptr(&field.ty)).replace("<", "::<"));
+			replace_qualified(&::syntax::print::pprust::ty_to_string(&codegen::strip_ptr(&field.ty))));
 
 		let member_expr = match value_ident {
 			Some(x) => {
@@ -376,7 +386,7 @@ fn fields_sequence(
 				tt.push(Token(
 					_sp,
 					token::Ident(
-						ext_cx.ident_of(&::syntax::print::pprust::ty_to_string(&field.ty).replace("<", "::<")),
+						ext_cx.ident_of(&replace_qualified(&::syntax::print::pprust::ty_to_string(&field.ty))),
 						token::Plain)));
 				tt.push(Token(_sp, token::ModSep));
 				tt.push(Token(_sp, token::Ident(ext_cx.ident_of("from_bytes"), token::Plain)));
@@ -450,7 +460,7 @@ fn named_fields_sequence(
 				tt.push(Token(
 					_sp,
 					token::Ident(
-						ext_cx.ident_of(&::syntax::print::pprust::ty_to_string(&field.ty).replace("<", "::<")),
+						ext_cx.ident_of(&replace_qualified(&::syntax::print::pprust::ty_to_string(&field.ty))),
 						token::Plain)));
 				tt.push(Token(_sp, token::ModSep));
 				tt.push(Token(_sp, token::Ident(ext_cx.ident_of("from_bytes"), token::Plain)));
diff --git a/ipc/rpc/src/binary.rs b/ipc/rpc/src/binary.rs
index 3ace31b2f..3ba172c6e 100644
--- a/ipc/rpc/src/binary.rs
+++ b/ipc/rpc/src/binary.rs
@@ -17,6 +17,7 @@
 //! Binary representation of types
 
 use util::bytes::Populatable;
+use util::numbers::{U256, H256, H2048, Address};
 use std::mem;
 use std::collections::VecDeque;
 
@@ -208,6 +209,29 @@ impl BinaryConvertable for String {
 	}
 }
 
+impl<T> BinaryConvertable for ::std::cell::RefCell<T> where T: BinaryConvertable {
+	fn size(&self) -> usize {
+		self.borrow().size()
+	}
+
+	fn from_empty_bytes() -> Result<Self, BinaryConvertError> {
+		Ok(::std::cell::RefCell::new(try!(T::from_empty_bytes())))
+	}
+
+	fn from_bytes(buffer: &[u8], length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError> {
+		Ok(::std::cell::RefCell::new(try!(T::from_bytes(buffer, length_stack))))
+	}
+
+	fn to_bytes(&self, buffer: &mut [u8], length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError> {
+		try!(self.borrow().to_bytes(buffer, length_stack));
+		Ok(())
+	}
+
+	fn len_params() -> usize {
+		T::len_params()
+	}
+}
+
 impl BinaryConvertable for Vec<u8> {
 	fn size(&self) -> usize {
 		self.len()
@@ -370,8 +394,13 @@ macro_rules! binary_fixed_size {
 
 binary_fixed_size!(u64);
 binary_fixed_size!(u32);
+binary_fixed_size!(usize);
 binary_fixed_size!(i32);
 binary_fixed_size!(bool);
+binary_fixed_size!(U256);
+binary_fixed_size!(H256);
+binary_fixed_size!(H2048);
+binary_fixed_size!(Address);
 
 #[test]
 fn vec_serialize() {
diff --git a/ipc/tests/Cargo.toml b/ipc/tests/Cargo.toml
index 286fffd18..bde5b4c62 100644
--- a/ipc/tests/Cargo.toml
+++ b/ipc/tests/Cargo.toml
@@ -9,8 +9,6 @@ path = "run.rs"
 
 [dependencies]
 "ethcore-ipc" = { path = "../rpc" }
-bincode = "*"
-serde = "0.7.0"
 ethcore-devtools = { path = "../../devtools" }
 semver = "0.2.0"
 nanomsg = { git = "https://github.com/ethcore/nanomsg.rs.git" }