diff --git a/substrate/executor/src/wasm_executor.rs b/substrate/executor/src/wasm_executor.rs
index c0c638fa3d..7fc9a741f8 100644
--- a/substrate/executor/src/wasm_executor.rs
+++ b/substrate/executor/src/wasm_executor.rs
@@ -240,7 +240,6 @@ mod tests {
 
 	use super::*;
 	use rustc_hex::FromHex;
-	use primitives::ed25519::hexdisplay::HexDisplay;
 
 	#[derive(Debug, Default)]
 	struct TestExternalities {
diff --git a/substrate/wasm-runtime/polkadot/src/runtime/staking.rs b/substrate/wasm-runtime/polkadot/src/runtime/staking.rs
index fe26a7c928..6b41ddbd8f 100644
--- a/substrate/wasm-runtime/polkadot/src/runtime/staking.rs
+++ b/substrate/wasm-runtime/polkadot/src/runtime/staking.rs
@@ -1,3 +1,4 @@
+use runtime_support::Vec;
 use keyedvec::KeyedVec;
 use storable::{Storable, StorageVec};
 use primitives::{BlockNumber, Balance, AccountID};
diff --git a/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.compact.wasm b/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.compact.wasm
index dbc3273e1b..5f357f2118 100644
Binary files a/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.compact.wasm and b/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.compact.wasm differ
diff --git a/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.wasm b/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.wasm
index d04664b607..700194bb0a 100644
Binary files a/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.wasm and b/substrate/wasm-runtime/target/wasm32-unknown-unknown/release/runtime_polkadot.wasm differ