diff --git a/beacon_chain/types/src/lib.rs b/beacon_chain/types/src/lib.rs
index c531da299..65c8b7bce 100644
--- a/beacon_chain/types/src/lib.rs
+++ b/beacon_chain/types/src/lib.rs
@@ -14,7 +14,6 @@ pub mod special_record;
 pub mod validator_record;
 pub mod validator_registration;
 
-use self::boolean_bitfield::BooleanBitfield;
 use self::ethereum_types::{
     H256,
     H160,