diff --git a/rpc/src/v1/impls/ethcore.rs b/rpc/src/v1/impls/ethcore.rs
index 33123ddd5..b430a710c 100644
--- a/rpc/src/v1/impls/ethcore.rs
+++ b/rpc/src/v1/impls/ethcore.rs
@@ -36,7 +36,6 @@ use v1::traits::Ethcore;
 use v1::types::{Bytes, U256, H160, H256, H512, Peers, Transaction, RpcSettings};
 use v1::helpers::{errors, SigningQueue, SignerService, NetworkSettings};
 use v1::helpers::dispatch::DEFAULT_MAC;
-use v1::helpers::params::expect_no_params;
 use v1::helpers::auto_args::Ready;
 
 /// Ethcore implementation.
diff --git a/signer/src/ws_server/session.rs b/signer/src/ws_server/session.rs
index 1e3a9a7d2..14c619a28 100644
--- a/signer/src/ws_server/session.rs
+++ b/signer/src/ws_server/session.rs
@@ -47,7 +47,7 @@ mod signer {
 #[cfg(not(feature = "ui"))]
 mod signer {
 	pub struct File {
-		pub content: &'static str,
+		pub content: &'static [u8],
 		pub content_type: &'static str,
 	}