5 files changed, 8 insertions, 11 deletions
diff --git a/eth/filters/api.go b/eth/filters/api.go
index 02a544ce1..61647a5d0 100644
--- a/eth/filters/api.go
+++ b/eth/filters/api.go
@@ -17,6 +17,7 @@
 package filters
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -24,8 +25,6 @@ import (
 	"sync"
 	"time"
 
-	"golang.org/x/net/context"
-
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
diff --git a/eth/filters/filter.go b/eth/filters/filter.go
index 9a8e2fd70..0a0b81224 100644
--- a/eth/filters/filter.go
+++ b/eth/filters/filter.go
@@ -17,10 +17,10 @@
 package filters
 
 import (
+	"context"
 	"math"
-	"time"
-
 	"math/big"
+	"time"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
@@ -28,7 +28,6 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/rpc"
-	"golang.org/x/net/context"
 )
 
 type Backend interface {
diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go
index 3adf8111a..7abace1e6 100644
--- a/eth/filters/filter_system.go
+++ b/eth/filters/filter_system.go
@@ -19,6 +19,7 @@
 package filters
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"sync"
@@ -29,7 +30,6 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/rpc"
-	"golang.org/x/net/context"
 )
 
 // Type determines the kind of filter and is used to put the filter in to
@@ -372,7 +372,8 @@ func (es *EventSystem) lightFilterNewHead(newHeader *types.Header, callBack func
 func (es *EventSystem) lightFilterLogs(header *types.Header, addresses []common.Address, topics [][]common.Hash, remove bool) []*types.Log {
 	if bloomFilter(header.Bloom, addresses, topics) {
 		// Get the logs of the block
-		ctx, _ := context.WithTimeout(context.Background(), time.Second*5)
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+		defer cancel()
 		receipts, err := es.backend.GetReceipts(ctx, header.Hash())
 		if err != nil {
 			return nil
diff --git a/eth/filters/filter_system_test.go b/eth/filters/filter_system_test.go
index 1cfced7e4..d9c245a85 100644
--- a/eth/filters/filter_system_test.go
+++ b/eth/filters/filter_system_test.go
@@ -17,13 +17,12 @@
 package filters
 
 import (
+	"context"
 	"math/big"
 	"reflect"
 	"testing"
 	"time"
 
-	"golang.org/x/net/context"
-
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"
diff --git a/eth/filters/filter_test.go b/eth/filters/filter_test.go
index 83ff3e9ce..c2dc2b842 100644
--- a/eth/filters/filter_test.go
+++ b/eth/filters/filter_test.go
@@ -17,13 +17,12 @@
 package filters
 
 import (
+	"context"
 	"io/ioutil"
 	"math/big"
 	"os"
 	"testing"
 
-	"golang.org/x/net/context"
-
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"