diff --git a/pkg/store/bucket_test.go b/pkg/store/bucket_test.go
index aa05bd07ea..f643222c57 100644
--- a/pkg/store/bucket_test.go
+++ b/pkg/store/bucket_test.go
@@ -23,8 +23,6 @@ import (
 	"time"
 
 	"github.com/cespare/xxhash"
-	"github.com/prometheus/client_golang/prometheus"
-
 	"github.com/go-kit/log"
 	"github.com/gogo/protobuf/proto"
 	"github.com/gogo/protobuf/types"
@@ -32,6 +30,8 @@ import (
 	"github.com/leanovate/gopter/gen"
 	"github.com/leanovate/gopter/prop"
 	"github.com/oklog/ulid"
+
+	"github.com/prometheus/client_golang/prometheus"
 	promtest "github.com/prometheus/client_golang/prometheus/testutil"
 	"github.com/prometheus/prometheus/model/labels"
 	"github.com/prometheus/prometheus/model/relabel"