diff --git a/beacon-chain/rpc/service.go b/beacon-chain/rpc/service.go
index 39029552b..0080552b3 100644
--- a/beacon-chain/rpc/service.go
+++ b/beacon-chain/rpc/service.go
@@ -366,6 +366,7 @@ func (s *Service) Start() {
 		ReceivedAttestationsBuffer:  make(chan *ethpbv1alpha1.Attestation, attestationBufferSize),
 		CollectedAttestationsBuffer: make(chan []*ethpbv1alpha1.Attestation, attestationBufferSize),
 		ReplayerBuilder:             ch,
+		CoreService:                 coreService,
 	}
 	beaconChainServerV1 := &beacon.Server{
 		CanonicalHistory:              ch,