diff --git a/beacon_node/eth2-libp2p/src/behaviour.rs b/beacon_node/eth2-libp2p/src/behaviour.rs
index 458b32cf9..3d5b94353 100644
--- a/beacon_node/eth2-libp2p/src/behaviour.rs
+++ b/beacon_node/eth2-libp2p/src/behaviour.rs
@@ -1,3 +1,4 @@
+use crate::rpc::methods::BlockRootSlot;
 use crate::rpc::{RPCEvent, RPCMessage, Rpc};
 use crate::NetworkConfig;
 use futures::prelude::*;
@@ -13,6 +14,8 @@ use libp2p::{
     NetworkBehaviour, PeerId,
 };
 use slog::{debug, o};
+use ssz_derive::{Decode, Encode};
+use types::Attestation;
 use types::Topic;
 
 /// Builds the network behaviour for the libp2p Swarm.
@@ -154,3 +157,21 @@ pub enum BehaviourEvent {
     // TODO: This is a stub at the moment
     Message(String),
 }
+
+#[derive(Debug, Clone)]
+pub enum IncomingGossip {
+    Block(BlockGossip),
+    Attestation(AttestationGossip),
+}
+
+/// Gossipsub message providing notification of a new block.
+#[derive(Encode, Decode, Clone, Debug, PartialEq)]
+pub struct BlockGossip {
+    pub root: BlockRootSlot,
+}
+
+/// Gossipsub message providing notification of a new attestation.
+#[derive(Encode, Decode, Clone, Debug, PartialEq)]
+pub struct AttestationGossip {
+    pub attestation: Attestation,
+}
diff --git a/beacon_node/eth2-libp2p/src/rpc/methods.rs b/beacon_node/eth2-libp2p/src/rpc/methods.rs
index 47e47f3eb..ad3233be7 100644
--- a/beacon_node/eth2-libp2p/src/rpc/methods.rs
+++ b/beacon_node/eth2-libp2p/src/rpc/methods.rs
@@ -97,12 +97,6 @@ impl RPCResponse {
     }
 }
 
-#[derive(Debug, Clone)]
-pub enum IncomingGossip {
-    Block(BlockGossip),
-    Attestation(AttestationGossip),
-}
-
 /* Request/Response data structures for RPC methods */
 
 /// The HELLO request/response handshake message.
@@ -242,15 +236,3 @@ pub struct BeaconChainStateResponse {
     /// The values corresponding the to the requested tree hashes.
     pub values: bool, //TBD - stubbed with encodeable bool
 }
-
-/// Gossipsub message providing notification of a new block.
-#[derive(Encode, Decode, Clone, Debug, PartialEq)]
-pub struct BlockGossip {
-    pub root: BlockRootSlot,
-}
-
-/// Gossipsub message providing notification of a new attestation.
-#[derive(Encode, Decode, Clone, Debug, PartialEq)]
-pub struct AttestationGossip {
-    pub attestation: Attestation,
-}
diff --git a/beacon_node/eth2-libp2p/src/rpc/mod.rs b/beacon_node/eth2-libp2p/src/rpc/mod.rs
index e04540416..08573aa52 100644
--- a/beacon_node/eth2-libp2p/src/rpc/mod.rs
+++ b/beacon_node/eth2-libp2p/src/rpc/mod.rs
@@ -11,7 +11,7 @@ use libp2p::core::swarm::{
     ConnectedPoint, NetworkBehaviour, NetworkBehaviourAction, PollParameters,
 };
 use libp2p::{Multiaddr, PeerId};
-pub use methods::{HelloMessage, IncomingGossip, RPCMethod, RPCRequest, RPCResponse};
+pub use methods::{HelloMessage, RPCMethod, RPCRequest, RPCResponse};
 pub use protocol::{RPCEvent, RPCProtocol, RequestId};
 use slog::o;
 use std::marker::PhantomData;
diff --git a/beacon_node/network/src/message_handler.rs b/beacon_node/network/src/message_handler.rs
index 12fb2fa6e..dcfee96a0 100644
--- a/beacon_node/network/src/message_handler.rs
+++ b/beacon_node/network/src/message_handler.rs
@@ -4,7 +4,8 @@ use crate::service::{NetworkMessage, OutgoingMessage};
 use crate::sync::SimpleSync;
 use crossbeam_channel::{unbounded as channel, Sender};
 use eth2_libp2p::{
-    rpc::{methods::GoodbyeReason, IncomingGossip, RPCRequest, RPCResponse, RequestId},
+    behaviour::IncomingGossip,
+    rpc::{methods::GoodbyeReason, RPCRequest, RPCResponse, RequestId},
     PeerId, RPCEvent,
 };
 use futures::future;
diff --git a/beacon_node/network/src/sync/simple_sync.rs b/beacon_node/network/src/sync/simple_sync.rs
index 37c2c4c26..4c08a6871 100644
--- a/beacon_node/network/src/sync/simple_sync.rs
+++ b/beacon_node/network/src/sync/simple_sync.rs
@@ -1,6 +1,7 @@
 use super::import_queue::ImportQueue;
 use crate::beacon_chain::BeaconChain;
 use crate::message_handler::NetworkContext;
+use eth2_libp2p::behaviour::{AttestationGossip, BlockGossip};
 use eth2_libp2p::rpc::methods::*;
 use eth2_libp2p::rpc::{RPCRequest, RPCResponse, RequestId};
 use eth2_libp2p::PeerId;