diff --git a/Cargo.lock b/Cargo.lock
index 4c368e0dc..0e4f4ae22 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1150,7 +1150,7 @@ dependencies = [
 [[package]]
 name = "libusb-sys"
 version = "0.2.3"
-source = "git+https://github.com/ethcore/libusb-sys#3c56a34bd040b0e60758824d839d9b700cfad2e0"
+source = "git+https://github.com/ethcore/libusb-sys#c10b1180646c9dc3f23a9b6bb825abcd3b7487ce"
 dependencies = [
  "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/rpc/src/v1/types/account_info.rs b/rpc/src/v1/types/account_info.rs
index 0d1be0b19..077110df0 100644
--- a/rpc/src/v1/types/account_info.rs
+++ b/rpc/src/v1/types/account_info.rs
@@ -14,8 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use serde::{Serialize};
-
 /// Account information.
 #[derive(Debug, Default, Clone, PartialEq, Serialize)]
 pub struct AccountInfo {