diff --git a/polkadot/consensus/src/lib.rs b/polkadot/consensus/src/lib.rs
index 6c39dc66e7..7edc78ea11 100644
--- a/polkadot/consensus/src/lib.rs
+++ b/polkadot/consensus/src/lib.rs
@@ -661,7 +661,7 @@ pub struct CreateProposal<C: PolkadotApi>  {
 impl<C> CreateProposal<C> where C: PolkadotApi {
 	fn propose_with(&self, candidates: Vec<CandidateReceipt>) -> Result<Block, Error> {
 		use polkadot_api::BlockBuilder;
-		use runtime_primitives::traits::{Hashing, BlakeTwo256};
+		use runtime_primitives::traits::{Hash as HashT, BlakeTwo256};
 
 		// TODO: handle case when current timestamp behind that in state.
 		let timestamp = current_timestamp();
diff --git a/polkadot/primitives/src/parachain.rs b/polkadot/primitives/src/parachain.rs
index dc77669785..ba528bb148 100644
--- a/polkadot/primitives/src/parachain.rs
+++ b/polkadot/primitives/src/parachain.rs
@@ -192,7 +192,7 @@ impl CandidateReceipt {
 	/// Get the blake2_256 hash
 	#[cfg(feature = "std")]
 	pub fn hash(&self) -> Hash {
-		use runtime_primitives::traits::{BlakeTwo256, Hashing};
+		use runtime_primitives::traits::{BlakeTwo256, Hash};
 		BlakeTwo256::hash_of(self)
 	}
 }
@@ -247,7 +247,7 @@ impl BlockData {
 	/// Compute hash of block data.
 	#[cfg(feature = "std")]
 	pub fn hash(&self) -> Hash {
-		use runtime_primitives::traits::{BlakeTwo256, Hashing};
+		use runtime_primitives::traits::{BlakeTwo256, Hash};
 		BlakeTwo256::hash(&self.0[..])
 	}
 }
diff --git a/polkadot/runtime/src/parachains.rs b/polkadot/runtime/src/parachains.rs
index 0ac9522ea0..809ff0396b 100644
--- a/polkadot/runtime/src/parachains.rs
+++ b/polkadot/runtime/src/parachains.rs
@@ -19,7 +19,7 @@
 use rstd::prelude::*;
 use codec::Slicable;
 
-use runtime_primitives::traits::{Hashing, BlakeTwo256, Executable, RefInto, MaybeEmpty};
+use runtime_primitives::traits::{Hash, BlakeTwo256, Executable, RefInto, MaybeEmpty};
 use primitives::parachain::{Id, Chain, DutyRoster, CandidateReceipt};
 use {system, session};
 
diff --git a/polkadot/transaction-pool/src/lib.rs b/polkadot/transaction-pool/src/lib.rs
index 5f344035ce..6e0ec39d77 100644
--- a/polkadot/transaction-pool/src/lib.rs
+++ b/polkadot/transaction-pool/src/lib.rs
@@ -49,7 +49,7 @@ use extrinsic_pool::api::ExtrinsicPool;
 use polkadot_api::PolkadotApi;
 use primitives::{AccountId, BlockId, Hash, Index, UncheckedExtrinsic as FutureProofUncheckedExtrinsic};
 use runtime::{Address, UncheckedExtrinsic};
-use substrate_runtime_primitives::traits::{Bounded, Checkable, Hashing, BlakeTwo256};
+use substrate_runtime_primitives::traits::{Bounded, Checkable, Hash as HashT, BlakeTwo256};
 
 pub use extrinsic_pool::txpool::{Options, Status, LightStatus, VerifiedTransaction as VerifiedTransactionOps};
 pub use error::{Error, ErrorKind, Result};