diff --git a/ethcore/src/tests/rpc.rs b/ethcore/src/tests/rpc.rs
index a25928cf8..786389905 100644
--- a/ethcore/src/tests/rpc.rs
+++ b/ethcore/src/tests/rpc.rs
@@ -19,7 +19,7 @@
 use nanoipc;
 use std::sync::Arc;
 use std::sync::atomic::{Ordering, AtomicBool};
-use client::{Client, ClientConfig, RemoteClient};
+use client::{Client, BlockChainClient, ClientConfig, RemoteClient, BlockID};
 use tests::helpers::*;
 use devtools::*;
 use miner::Miner;
@@ -55,3 +55,17 @@ fn can_handshake() {
 		assert!(remote_client.handshake().is_ok());
 	})
 }
+
+#[test]
+fn can_query_block() {
+	crossbeam::scope(|scope| {
+		let stop_guard = StopGuard::new();
+		let socket_path = "ipc:///tmp/parity-client-rpc-20.ipc";
+		run_test_worker(scope, stop_guard.share(), socket_path);
+		let remote_client = nanoipc::init_client::<RemoteClient<_>>(socket_path).unwrap();
+
+		let non_existant_block = remote_client.block_header(BlockID::Number(999));
+
+		assert!(non_existant_block.is_none());
+	})
+}
diff --git a/ipc/codegen/src/serialization.rs b/ipc/codegen/src/serialization.rs
index 9c58e198e..0ab70f93a 100644
--- a/ipc/codegen/src/serialization.rs
+++ b/ipc/codegen/src/serialization.rs
@@ -707,7 +707,12 @@ fn binary_expr_variant(
 						let buffer = &mut buffer[1..];
 						$write_expr
 				}),
-				read: quote_arm!(cx, $variant_index_ident => { $read_expr } ),
+				read: quote_arm!(cx,
+					$variant_index_ident => {
+					 	let buffer = &buffer[1..];
+						$read_expr
+					}
+				),
 			})
 		},
 		ast::VariantData::Struct(ref fields, _) => {
@@ -742,7 +747,12 @@ fn binary_expr_variant(
 						let buffer = &mut buffer[1..];
 						$write_expr
 				}),
-				read: quote_arm!(cx, $variant_index_ident => { $read_expr } ),
+				read: quote_arm!(cx,
+					$variant_index_ident => {
+					 	let buffer = &buffer[1..];
+						$read_expr
+					}
+				),
 			})
 		},
 	}