diff --git a/beacon_node/beacon_chain/src/attestation_targets.rs b/beacon_node/beacon_chain/src/attestation_targets.rs
index 6971d5b4eb..d968abcf2c 100644
--- a/beacon_node/beacon_chain/src/attestation_targets.rs
+++ b/beacon_node/beacon_chain/src/attestation_targets.rs
@@ -1,7 +1,6 @@
-use crate::{BeaconChain, CheckPoint, ClientDB, SlotClock};
+use crate::{BeaconChain, ClientDB, SlotClock};
 use std::collections::HashMap;
-use std::sync::RwLockReadGuard;
-use types::{BeaconBlock, BeaconState, Hash256};
+use types::Hash256;
 
 pub struct AttestationTargets {
     map: HashMap<u64, Hash256>,
diff --git a/beacon_node/beacon_chain/src/block_graph.rs b/beacon_node/beacon_chain/src/block_graph.rs
index 8a0f6e61d9..b031c2c10a 100644
--- a/beacon_node/beacon_chain/src/block_graph.rs
+++ b/beacon_node/beacon_chain/src/block_graph.rs
@@ -1,7 +1,6 @@
-use crate::{BeaconChain, CheckPoint, ClientDB, SlotClock};
 use std::collections::HashSet;
 use std::sync::{RwLock, RwLockReadGuard};
-use types::{BeaconBlock, BeaconState, Hash256};
+use types::Hash256;
 
 pub struct BlockGraph {
     pub leaves: RwLock<HashSet<Hash256>>,
diff --git a/validator_client/src/duties/mod.rs b/validator_client/src/duties/mod.rs
index 78dbfa964f..f368d6dca6 100644
--- a/validator_client/src/duties/mod.rs
+++ b/validator_client/src/duties/mod.rs
@@ -33,7 +33,6 @@ pub enum Error {
     SlotClockError,
     SlotUnknowable,
     EpochMapPoisoned,
-    SlotClockPoisoned,
     EpochLengthIsZero,
     BeaconNodeError(BeaconNodeError),
 }