diff --git a/prometheus.go b/prometheus.go
index bb00201..0fd8bcc 100644
--- a/prometheus.go
+++ b/prometheus.go
@@ -15,7 +15,7 @@ import (
 var (
 	MetricExporterPusher                         = func() error { return nil }
 	MetricExporterHandler Handler                = nil
-	metricRegistry        *prometheus.Registry   = nil
+	MetricRegistry        *prometheus.Registry   = nil
 	metricApiCounter      *prometheus.CounterVec = nil
 	metricApiSummary      *prometheus.SummaryVec = nil
 	instance              string                 = "--unknown--"
@@ -68,9 +68,9 @@ func InitMetrics(instanceValue string) {
 		[]string{"api", "errcode", "appid"},
 	)
 
-	metricRegistry = prometheus.NewRegistry()
-	metricRegistry.MustRegister(metricApiCounter)
-	metricRegistry.MustRegister(metricApiSummary)
+	MetricRegistry = prometheus.NewRegistry()
+	MetricRegistry.MustRegister(metricApiCounter)
+	MetricRegistry.MustRegister(metricApiSummary)
 }
 
 func SetupMetricsExporterHandler(apiname string) {
@@ -78,10 +78,10 @@ func SetupMetricsExporterHandler(apiname string) {
 		apiname = "premetheus_metrics_exporter"
 	}
 
-	opt := promhttp.HandlerOpts{Registry: metricRegistry}
+	opt := promhttp.HandlerOpts{Registry: MetricRegistry}
 	MetricExporterHandler = &metricExporterHandler{
 		name:            apiname,
-		promhttpHandler: promhttp.HandlerFor(metricRegistry, opt),
+		promhttpHandler: promhttp.HandlerFor(MetricRegistry, opt),
 	}
 }
 
@@ -93,7 +93,7 @@ func SetupMetricsExporterPusher(pushgateway string, jobname string) {
 	var pusher = push.
 		New(pushgateway, jobname).
 		Grouping("instance", instance).
-		Gatherer(metricRegistry)
+		Gatherer(MetricRegistry)
 
 	MetricExporterPusher = func() error {
 		RecordMetrics("push_metrics_to_prometheus", "0", "selfmonitoring", 1.0)