diff --git a/storage/metric/leveldb.go b/storage/metric/leveldb.go
index b4cff7c28..2af06ac48 100644
--- a/storage/metric/leveldb.go
+++ b/storage/metric/leveldb.go
@@ -698,7 +698,7 @@ func extractSampleKey(i iterator) (k *dto.SampleKey, err error) {
 	return
 }
 
-func extractSampleValue(i iterator) (v *dto.SampleValueSeries, err error) {
+func extractSampleValues(i iterator) (v *dto.SampleValueSeries, err error) {
 	if i == nil {
 		panic("nil iterator")
 	}
@@ -1091,7 +1091,7 @@ func (l *LevelDBMetricPersistence) GetValueAtTime(m model.Metric, t time.Time, s
 		return
 	}
 
-	firstValue, err = extractSampleValue(iterator)
+	firstValue, err = extractSampleValues(iterator)
 	if err != nil {
 		return
 	}
@@ -1147,7 +1147,7 @@ func (l *LevelDBMetricPersistence) GetValueAtTime(m model.Metric, t time.Time, s
 
 	var secondValue *dto.SampleValueSeries
 
-	secondValue, err = extractSampleValue(iterator)
+	secondValue, err = extractSampleValues(iterator)
 	if err != nil {
 		return
 	}
@@ -1211,7 +1211,7 @@ func (l *LevelDBMetricPersistence) GetRangeValues(m model.Metric, i model.Interv
 			break
 		}
 
-		retrievedValue, err := extractSampleValue(iterator)
+		retrievedValue, err := extractSampleValues(iterator)
 		if err != nil {
 			return nil, err
 		}