diff --git a/common/expbloom/bloom_test.go b/common/expbloom/bloom_test.go
index 35eaf15136..6d5011692b 100644
--- a/common/expbloom/bloom_test.go
+++ b/common/expbloom/bloom_test.go
@@ -1,44 +1,28 @@
 package bloom
 
 import (
+	"encoding/binary"
 	"testing"
 	"time"
 )
 
-type hashable struct {
-	b []byte
-}
-
-func (h hashable) BlockSize() int {
-	return len(h.b)
-}
-
-func (h hashable) Hash() []byte {
-	return h.b
-}
-
-func (h hashable) Sum([]byte) []byte {
-	return h.b
-}
+type hashable []byte
 
+func (h hashable) Write(p []byte) (n int, err error) { panic("not implemented") }
+func (h hashable) Sum(b []byte) []byte               { panic("not implemented") }
+func (h hashable) Reset()                            { panic("not implemented") }
+func (h hashable) BlockSize() int                    { panic("not implemented") }
+func (h hashable) Size() int                         { return 8 }
 func (h hashable) Sum64() uint64 {
-	return 1
-}
-
-func (h hashable) Write([]byte) (int, error) {
-	return 0, nil
-}
-
-func (h hashable) Reset() {}
-
-func (h hashable) Size() int {
-	return len(h.b)
+	hash := make([]byte, 8)
+	copy(hash, h)
+	return binary.BigEndian.Uint64(hash[0:8])
 }
 
 func TestBloom(t *testing.T) {
 	bloom, _ := NewExpiringBloom(3, 1024, 10*time.Millisecond)
 
-	testKey := hashable{[]byte{0x01}}
+	testKey := hashable([]byte{0x01})
 	bloom.Add(testKey)
 	if !bloom.Contains(testKey) {
 		t.Fatal()
@@ -60,7 +44,7 @@ func TestBloom(t *testing.T) {
 func TestBloom2(t *testing.T) {
 	bloom, _ := NewExpiringBloom(3, 1024, 10*time.Second)
 
-	testKey := hashable{[]byte{0x01}}
+	testKey := hashable([]byte{0x01})
 	// Add key in bloom 0
 	bloom.Add(testKey)
 	if !bloom.Contains(testKey) {
@@ -86,7 +70,7 @@ func TestBloom2(t *testing.T) {
 func BenchmarkAdd(b *testing.B) {
 	bloom, _ := NewExpiringBloom(2, 1024, 10*time.Second)
 
-	testKey := hashable{[]byte{0x01}}
+	testKey := hashable([]byte{0x01})
 	for i := 0; i < b.N; i++ {
 		bloom.Add(testKey)
 	}