diff --git a/validator/rpc/standard_api.go b/validator/rpc/standard_api.go
index 96510ec2df31..92b64f32e177 100644
--- a/validator/rpc/standard_api.go
+++ b/validator/rpc/standard_api.go
@@ -432,7 +432,7 @@ func (s *Server) ListFeeRecipientByPubkey(ctx context.Context, req *ethpbservice
 // SetFeeRecipientByPubkey updates the eth address mapped to the public key.
 func (s *Server) SetFeeRecipientByPubkey(ctx context.Context, req *ethpbservice.SetFeeRecipientByPubkeyRequest) (*empty.Empty, error) {
 	if s.validatorService == nil {
-		return nil, status.Error(codes.FailedPrecondition, "Validator service not ready.")
+		return nil, status.Error(codes.FailedPrecondition, "Validator service not ready")
 	}
 	validatorKey := req.Pubkey
 	if err := validatePublicKey(validatorKey); err != nil {