diff --git a/pkg/query/querier_test.go b/pkg/query/querier_test.go
index 947aaf96e7d..339125743cc 100644
--- a/pkg/query/querier_test.go
+++ b/pkg/query/querier_test.go
@@ -308,7 +308,7 @@ func (s series) Iterator() chunkenc.Iterator {
 
 // TestQuerier_Select tests expected results with and without deduplication.
 // To test with real data:
-// Collect the expected results from Prometheus through "/api/v1/query_range" and save to a file.
+// Collect the expected results from Prometheus or Thanos through "/api/v1/query_range" and save to a file.
 // Collect raw data to be used for local storage:
 // 	scripts/insecure_grpcurl_series.sh queriesGrpcIP:port '[{"name": "__name__", "value":"cluster_version"},{"name":"_id","value":"xxx"}]' 1597823000000 1597824600000 > localStorage.json
 // 	Remove all white space from the file and put each series in a new line.
@@ -321,10 +321,10 @@ func TestQuerier_Select(t *testing.T) {
 	for _, tcase := range []struct {
 		name            string
 		storeAPI        storepb.StoreServer
-		hints           *storage.SelectHints
-		equivalentQuery string
 		matchers        []*labels.Matcher
 		replicaLabels   []string // Replica label groups chunks by the label value and strips it from the final result.
+		hints           *storage.SelectHints
+		equivalentQuery string
 
 		expected           []series
 		expectedAfterDedup series
@@ -698,19 +698,6 @@ func (q *mockedQueryable) Close() error {
 	return nil
 }
 
-type mockedQuerier struct {
-	series []series
-	storage.LabelQuerier
-}
-
-func (q mockedQuerier) Select(_ bool, _ *storage.SelectHints, _ ...*labels.Matcher) storage.SeriesSet {
-	return &mockedSeriesSet{series: q.series}
-}
-
-func (q mockedQuerier) Close() error {
-	return nil
-}
-
 // TODO(bwplotka): Reuse SeriesSets from chunk iterators from Prometheus.
 type mockedSeriesSet struct {
 	series []series