diff --git a/client/alias.go b/client/alias.go
index bbdb0d764..33cdc60bf 100644
--- a/client/alias.go
+++ b/client/alias.go
@@ -20,6 +20,10 @@ import (
 	"github.com/linkall-labs/vanus/client/pkg/eventlog"
 )
 
+const (
+	XVanusLogOffset = eventlog.XVanusLogOffset
+)
+
 // EventBus functions.
 var (
 	// OpenBusWriter open a Writer of EventBus identified by vrn.
diff --git a/client/internal/vanus/eventlog/log_segment.go b/client/internal/vanus/eventlog/log_segment.go
index b1a691cba..2e57db771 100644
--- a/client/internal/vanus/eventlog/log_segment.go
+++ b/client/internal/vanus/eventlog/log_segment.go
@@ -185,6 +185,7 @@ func (s *logSegment) Read(ctx context.Context, from int64, size int16) ([]*ce.Ev
 		buf := make([]byte, 8)
 		binary.BigEndian.PutUint64(buf, uint64(offset))
 		e.SetExtension(eventlog.XVanusLogOffset, buf)
+		e.SetExtension(segment.XVanusBlockOffset, nil)
 	}
 
 	return events, err
diff --git a/internal/store/segment/server_test.go b/internal/store/segment/server_test.go
index 80e61c723..0ad03d97d 100644
--- a/internal/store/segment/server_test.go
+++ b/internal/store/segment/server_test.go
@@ -16,7 +16,6 @@ package segment
 
 import (
 	"context"
-	stdCtx "context"
 	"fmt"
 	"os"
 	"path"
@@ -40,7 +39,7 @@ func TestServer_RemoveBlock(t *testing.T) {
 	Convey("test RemoveBlock", t, func() {
 		cfg := store.Config{}
 		srv := NewServer(cfg).(*server)
-		ctx := stdCtx.Background()
+		ctx := context.Background()
 		Convey("test state checking", func() {
 			err := srv.RemoveBlock(ctx, vanus.NewID())
 			et := err.(*errors.ErrorType)
@@ -66,7 +65,7 @@ func TestServer_RemoveBlock(t *testing.T) {
 		}()
 		p := path.Join(dir, "/vanus/test/store/test")
 		_ = os.MkdirAll(p, 0777)
-		blk, err := file.Create(stdCtx.Background(), p, vanus.NewID(), 1024*1024*64)
+		blk, err := file.Create(context.Background(), p, vanus.NewID(), 1024*1024*64)
 		So(err, ShouldBeNil)
 
 		Convey("the block not found", func() {