diff --git a/portalnetwork/storage/content_storage.go b/portalnetwork/storage/content_storage.go
index e726d612e5..a5d0d2b26d 100644
--- a/portalnetwork/storage/content_storage.go
+++ b/portalnetwork/storage/content_storage.go
@@ -7,6 +7,7 @@ import (
 )
 
 var ErrContentNotFound = fmt.Errorf("content not found")
+var ErrInsufficientRadius = fmt.Errorf("insufficient radius")
 
 var MaxDistance = uint256.MustFromHex("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
 
diff --git a/portalnetwork/storage/ethpepple/storage.go b/portalnetwork/storage/ethpepple/storage.go
index 897918bbbb..922e1a9e8e 100644
--- a/portalnetwork/storage/ethpepple/storage.go
+++ b/portalnetwork/storage/ethpepple/storage.go
@@ -182,6 +182,20 @@ func (c *ContentStorage) Get(contentKey []byte, contentId []byte) ([]byte, error
 
 // Put implements storage.ContentStorage.
 func (c *ContentStorage) Put(contentKey []byte, contentId []byte, content []byte) error {
+	distance := xor(contentId, c.nodeId[:])
+	valid, err := c.inRadius(distance)
+	if err != nil {
+		return err
+	}
+	if !valid {
+		return storage.ErrInsufficientRadius
+	}
+
+	err = c.db.Set(distance, content, c.writeOptions)
+	if err != nil {
+		return err
+	}
+
 	length := uint64(len(contentId)) + uint64(len(content))
 	<-c.sizeChan
 	c.size += length
@@ -193,8 +207,7 @@ func (c *ContentStorage) Put(contentKey []byte, contentId []byte, content []byte
 		}
 	}
 	c.sizeChan <- struct{}{}
-	distance := xor(contentId, c.nodeId[:])
-	return c.db.Set(distance, content, c.writeOptions)
+	return nil
 }
 
 // Radius implements storage.ContentStorage.
@@ -263,6 +276,17 @@ func (c *ContentStorage) prune() error {
 	return nil
 }
 
+func (c *ContentStorage) inRadius(distance []byte) (bool, error) {
+	dis := uint256.NewInt(0)
+	err := dis.UnmarshalSSZ(distance)
+	if err != nil {
+		return false, err
+	}
+	val := c.radius.Load()
+	radius := val.(*uint256.Int)
+	return radius.Gt(dis), nil
+}
+
 func xor(contentId, nodeId []byte) []byte {
 	// length of contentId maybe not 32bytes
 	padding := make([]byte, 32)
diff --git a/portalnetwork/storage/ethpepple/storage_test.go b/portalnetwork/storage/ethpepple/storage_test.go
index 44e3cd301d..9aaca6f6d0 100644
--- a/portalnetwork/storage/ethpepple/storage_test.go
+++ b/portalnetwork/storage/ethpepple/storage_test.go
@@ -2,7 +2,6 @@ package ethpepple
 
 import (
 	"testing"
-	"time"
 
 	"github.com/ethereum/go-ethereum/portalnetwork/storage"
 	"github.com/holiman/uint256"
@@ -102,61 +101,63 @@ func TestPrune(t *testing.T) {
 	testcases := []struct {
 		contentKey  [32]byte
 		content     []byte
-		shouldPrune bool
+		outOfRadius bool
+		err         error
 	}{
 		{
-			contentKey:  uint256.NewInt(1).Bytes32(),
-			content:     genBytes(900_000),
-			shouldPrune: false,
+			contentKey: uint256.NewInt(1).Bytes32(),
+			content:    genBytes(900_000),
 		},
 		{
-			contentKey:  uint256.NewInt(2).Bytes32(),
-			content:     genBytes(40_000),
-			shouldPrune: false,
+			contentKey: uint256.NewInt(2).Bytes32(),
+			content:    genBytes(40_000),
 		},
 		{
-			contentKey:  uint256.NewInt(3).Bytes32(),
-			content:     genBytes(20_000),
-			shouldPrune: true,
+			contentKey: uint256.NewInt(3).Bytes32(),
+			content:    genBytes(20_000),
+			err:        storage.ErrContentNotFound,
 		},
 		{
-			contentKey:  uint256.NewInt(4).Bytes32(),
-			content:     genBytes(20_000),
-			shouldPrune: true,
+			contentKey: uint256.NewInt(4).Bytes32(),
+			content:    genBytes(20_000),
+			err:        storage.ErrContentNotFound,
 		},
 		{
-			contentKey:  uint256.NewInt(5).Bytes32(),
-			content:     genBytes(20_000),
-			shouldPrune: true,
+			contentKey: uint256.NewInt(5).Bytes32(),
+			content:    genBytes(20_000),
+			err:        storage.ErrContentNotFound,
 		},
 		{
 			contentKey:  uint256.NewInt(6).Bytes32(),
 			content:     genBytes(20_000),
-			shouldPrune: false,
+			err:         storage.ErrInsufficientRadius,
+			outOfRadius: true,
 		},
 		{
 			contentKey:  uint256.NewInt(7).Bytes32(),
 			content:     genBytes(20_000),
-			shouldPrune: false,
+			err:         storage.ErrInsufficientRadius,
+			outOfRadius: true,
 		},
 	}
 
 	for _, val := range testcases {
-		db.Put(val.contentKey[:], val.contentKey[:], val.content)
+		err := db.Put(val.contentKey[:], val.contentKey[:], val.content)
+		if err != nil {
+			assert.Equal(t, val.err, err)
+		}
 	}
-	// // wait to prune done
-	time.Sleep(2 * time.Second)
 	for _, val := range testcases {
 		content, err := db.Get(val.contentKey[:], val.contentKey[:])
-		if !val.shouldPrune {
+		if err == nil {
 			assert.Equal(t, val.content, content)
-		} else {
-			assert.Error(t, err)
+		} else if !val.outOfRadius {
+			assert.Equal(t, val.err, err)
 		}
 	}
 	radius := db.Radius()
 	data, err := radius.MarshalSSZ()
 	assert.NoError(t, err)
-	actual := uint256.NewInt(4).Bytes32()
+	actual := uint256.NewInt(2).Bytes32()
 	assert.Equal(t, data, actual[:])
 }