diff --git a/api/prometheus/v1/api.go b/api/prometheus/v1/api.go
index 4637e3c7a..9b4fc5725 100644
--- a/api/prometheus/v1/api.go
+++ b/api/prometheus/v1/api.go
@@ -407,16 +407,16 @@ type queryResult struct {
 	v model.Value
 }
 
-// TSDBResult contains the result from querying the tsdb endpoint
+// TSDBResult contains the result from querying the tsdb endpoint.
 type TSDBResult struct {
-	SeriesCountByMetricName     []MetricCountPair `json:"seriesCountByMetricName"`
-	LabelValueCountByLabelName  []MetricCountPair `json:"labelValueCountByLabelName"`
-	MemoryInBytesByLabelName    []MetricCountPair `json:"memoryInBytesByLabelName"`
-	SeriesCountByLabelValuePair []MetricCountPair `json:"seriesCountByLabelValuePair"`
+	SeriesCountByMetricName     []Stat `json:"seriesCountByMetricName"`
+	LabelValueCountByLabelName  []Stat `json:"labelValueCountByLabelName"`
+	MemoryInBytesByLabelName    []Stat `json:"memoryInBytesByLabelName"`
+	SeriesCountByLabelValuePair []Stat `json:"seriesCountByLabelValuePair"`
 }
 
-// MetricCountPair models information about metric name and count
-type MetricCountPair struct {
+// Stat models information about statistic value.
+type Stat struct {
 	Name  string `json:"name"`
 	Value uint64 `json:"value"`
 }
diff --git a/api/prometheus/v1/api_test.go b/api/prometheus/v1/api_test.go
index 053efd695..1cc6d2007 100644
--- a/api/prometheus/v1/api_test.go
+++ b/api/prometheus/v1/api_test.go
@@ -1000,25 +1000,25 @@ func TestAPIs(t *testing.T) {
 				},
 			},
 			res: TSDBResult{
-				SeriesCountByMetricName: []MetricCountPair{
+				SeriesCountByMetricName: []Stat{
 					{
 						Name:  "kubelet_http_requests_duration_seconds_bucket",
 						Value: 1000,
 					},
 				},
-				LabelValueCountByLabelName: []MetricCountPair{
+				LabelValueCountByLabelName: []Stat{
 					{
 						Name:  "__name__",
 						Value: 200,
 					},
 				},
-				MemoryInBytesByLabelName: []MetricCountPair{
+				MemoryInBytesByLabelName: []Stat{
 					{
 						Name:  "id",
 						Value: 4096,
 					},
 				},
-				SeriesCountByLabelValuePair: []MetricCountPair{
+				SeriesCountByLabelValuePair: []Stat{
 					{
 						Name:  "job=kubelet",
 						Value: 30000,