diff --git a/client/nginx_test.go b/client/nginx_test.go
index cda5062..04a3bf6 100644
--- a/client/nginx_test.go
+++ b/client/nginx_test.go
@@ -5,7 +5,7 @@ import "testing"
 const validStabStats = "Active connections: 1457 \nserver accepts handled requests\n 6717066 6717066 65844359 \nReading: 1 Writing: 8 Waiting: 1448 \n"
 
 func TestParseStubStatsValidInput(t *testing.T) {
-	var tests = []struct {
+	tests := []struct {
 		input          []byte
 		expectedResult StubStats
 		expectedError  bool
diff --git a/collector/helper.go b/collector/helper.go
index 305efde..9eb6315 100644
--- a/collector/helper.go
+++ b/collector/helper.go
@@ -4,8 +4,10 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 )
 
-const nginxUp = 1
-const nginxDown = 0
+const (
+	nginxUp   = 1
+	nginxDown = 0
+)
 
 func newGlobalMetric(namespace string, metricName string, docString string, constLabels map[string]string) *prometheus.Desc {
 	return prometheus.NewDesc(namespace+"_"+metricName, docString, nil, constLabels)