diff --git a/beacon-chain/core/validators/validator.go b/beacon-chain/core/validators/validator.go
index 49c1c4d71b..139254e56c 100644
--- a/beacon-chain/core/validators/validator.go
+++ b/beacon-chain/core/validators/validator.go
@@ -414,7 +414,7 @@ func ProcessDeposit(
 	state *pb.BeaconState,
 	pubkey []byte,
 	amount uint64,
-	proofOfPossession []byte,
+	_ /*proofOfPossession*/ []byte,
 	withdrawalCredentials []byte,
 	randaoCommitment []byte,
 	pocCommitment []byte,
diff --git a/shared/prometheus/service.go b/shared/prometheus/service.go
index 33f4c8e635..2ebafe1c92 100644
--- a/shared/prometheus/service.go
+++ b/shared/prometheus/service.go
@@ -35,7 +35,7 @@ func NewPrometheusService(addr string, svcRegistry *shared.ServiceRegistry) *Ser
 	return s
 }
 
-func (s *Service) healthzHandler(w http.ResponseWriter, r *http.Request) {
+func (s *Service) healthzHandler(w http.ResponseWriter, _ *http.Request) {
 	// Call all services in the registry.
 	// if any are not OK, write 500
 	// print the statuses of all services.
@@ -51,6 +51,7 @@ func (s *Service) healthzHandler(w http.ResponseWriter, r *http.Request) {
 			hasError = true
 			status = "ERROR " + v.Error()
 		}
+
 		if _, err := buf.WriteString(fmt.Sprintf("%s: %s\n", k, status)); err != nil {
 			hasError = true
 			status = "ERROR " + err.Error()
@@ -65,7 +66,9 @@ func (s *Service) healthzHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Write http body
-	w.Write(buf.Bytes())
+	if _, err := w.Write(buf.Bytes()); err != nil {
+		log.Errorf("Could not write healthz body %v", err)
+	}
 }
 
 // Start the prometheus service.