diff --git a/br/pkg/lightning/common/util_test.go b/br/pkg/lightning/common/util_test.go
index 3915a318b06c5..3668626276938 100644
--- a/br/pkg/lightning/common/util_test.go
+++ b/br/pkg/lightning/common/util_test.go
@@ -22,7 +22,7 @@ import (
 	"net/http/httptest"
 	"time"
 
-	sqlmock "github.com/DATA-DOG/go-sqlmock"
+	"github.com/DATA-DOG/go-sqlmock"
 	. "github.com/pingcap/check"
 	"github.com/pingcap/errors"
 	"github.com/pingcap/tidb/br/pkg/lightning/common"
diff --git a/br/pkg/summary/collector.go b/br/pkg/summary/collector.go
index 6c82bf54fba25..b0a3735db0c88 100644
--- a/br/pkg/summary/collector.go
+++ b/br/pkg/summary/collector.go
@@ -51,7 +51,7 @@ type LogCollector interface {
 
 type logFunc func(msg string, fields ...zap.Field)
 
-var collector LogCollector = NewLogCollector(log.Info)
+var collector = NewLogCollector(log.Info)
 
 // InitCollector initilize global collector instance.
 func InitCollector( // revive:disable-line:flag-parameter
diff --git a/sessionctx/binloginfo/binloginfo_test.go b/sessionctx/binloginfo/binloginfo_test.go
index 6178944ddffa9..0eee0d77eafdc 100644
--- a/sessionctx/binloginfo/binloginfo_test.go
+++ b/sessionctx/binloginfo/binloginfo_test.go
@@ -42,7 +42,7 @@ import (
 	"github.com/pingcap/tidb/types"
 	"github.com/pingcap/tidb/util/codec"
 	"github.com/pingcap/tidb/util/collate"
-	binlog "github.com/pingcap/tipb/go-binlog"
+	"github.com/pingcap/tipb/go-binlog"
 	"github.com/stretchr/testify/require"
 	"google.golang.org/grpc"
 )
diff --git a/store/mockstore/unistore/cophandler/topn.go b/store/mockstore/unistore/cophandler/topn.go
index 185317cbec1ee..54c0853a7199a 100644
--- a/store/mockstore/unistore/cophandler/topn.go
+++ b/store/mockstore/unistore/cophandler/topn.go
@@ -23,7 +23,7 @@ import (
 	"github.com/pingcap/tidb/sessionctx/stmtctx"
 	"github.com/pingcap/tidb/types"
 	"github.com/pingcap/tidb/util/collate"
-	tipb "github.com/pingcap/tipb/go-tipb"
+	"github.com/pingcap/tipb/go-tipb"
 )
 
 type sortRow struct {
diff --git a/table/tables/tables_test.go b/table/tables/tables_test.go
index a3d13a3bfa89e..bc2d8440f7e04 100644
--- a/table/tables/tables_test.go
+++ b/table/tables/tables_test.go
@@ -36,7 +36,7 @@ import (
 	"github.com/pingcap/tidb/types"
 	"github.com/pingcap/tidb/util"
 	"github.com/pingcap/tidb/util/testutil"
-	binlog "github.com/pingcap/tipb/go-binlog"
+	"github.com/pingcap/tipb/go-binlog"
 	"github.com/stretchr/testify/require"
 	"google.golang.org/grpc"
 )
diff --git a/util/checksum/checksum_test.go b/util/checksum/checksum_test.go
index b3d205954c7ff..57367b6eff37a 100644
--- a/util/checksum/checksum_test.go
+++ b/util/checksum/checksum_test.go
@@ -479,7 +479,7 @@ func assertUnderlyingWrite(t *testing.T, encrypt bool, f io.WriteCloser, fc func
 }
 
 func underlyingReadAt(f io.ReaderAt, encrypt bool, ctrCipher *encrypt2.CtrCipher, n, off int) error {
-	var underlying io.ReaderAt = f
+	var underlying = f
 	if encrypt {
 		underlying = encrypt2.NewReader(underlying, ctrCipher)
 	}
@@ -492,7 +492,7 @@ func underlyingReadAt(f io.ReaderAt, encrypt bool, ctrCipher *encrypt2.CtrCipher
 
 func assertReadAtFunc(t *testing.T, encrypt bool, ctrCipher *encrypt2.CtrCipher) func(off int64, r []byte, assertErr error, assertN int, assertString string, f io.ReaderAt) {
 	return func(off int64, r []byte, assertErr error, assertN int, assertString string, f io.ReaderAt) {
-		var underlying io.ReaderAt = f
+		var underlying = f
 		if encrypt {
 			underlying = encrypt2.NewReader(underlying, ctrCipher)
 		}
diff --git a/util/tracing/util_test.go b/util/tracing/util_test.go
index 7b54289041723..0e7760713803a 100644
--- a/util/tracing/util_test.go
+++ b/util/tracing/util_test.go
@@ -18,7 +18,7 @@ import (
 	"context"
 	"testing"
 
-	basictracer "github.com/opentracing/basictracer-go"
+	"github.com/opentracing/basictracer-go"
 	"github.com/opentracing/opentracing-go"
 	"github.com/pingcap/tidb/util/tracing"
 	"github.com/stretchr/testify/require"