diff --git a/roaring64/roaring64.go b/roaring64/roaring64.go
index 712f3ea4..ebea5ffc 100644
--- a/roaring64/roaring64.go
+++ b/roaring64/roaring64.go
@@ -87,11 +87,10 @@ func (rb *Bitmap) WriteTo(stream io.Writer) (int64, error) {
 func (rb *Bitmap) FromUnsafeBytes(data []byte) (p int64, err error) {
 	stream := internal.NewByteBuffer(data)
 	sizeBuf := make([]byte, 8)
-	n, err := stream.Read(sizeBuf)
+	_, err = stream.Read(sizeBuf)
 	if err != nil {
 		return 0, err
 	}
-	p += int64(n)
 	size := binary.LittleEndian.Uint64(sizeBuf)
 
 	rb.highlowcontainer.resize(0)
@@ -115,17 +114,16 @@ func (rb *Bitmap) FromUnsafeBytes(data []byte) (p int64, err error) {
 		if err != nil {
 			return 0, fmt.Errorf("error in bitmap.UnsafeFromBytes: could not read key #%d: %w", i, err)
 		}
-		p += 4
 		rb.highlowcontainer.keys[i] = binary.LittleEndian.Uint32(keyBuf)
 		rb.highlowcontainer.containers[i] = roaring.NewBitmap()
 		n, err := rb.highlowcontainer.containers[i].ReadFrom(stream)
+
 		if n == 0 || err != nil {
 			return int64(n), fmt.Errorf("Could not deserialize bitmap for key #%d: %s", i, err)
 		}
-		p += int64(n)
 	}
 
-	return p, nil
+	return stream.GetReadBytes(), nil
 }
 
 // ReadFrom reads a serialized version of this bitmap from stream.
@@ -167,12 +165,12 @@ func (rb *Bitmap) ReadFrom(stream io.Reader) (p int64, err error) {
 		rb.highlowcontainer.keys[i] = binary.LittleEndian.Uint32(keyBuf)
 		rb.highlowcontainer.containers[i] = roaring.NewBitmap()
 		n, err := rb.highlowcontainer.containers[i].ReadFrom(stream)
+
 		if n == 0 || err != nil {
 			return int64(n), fmt.Errorf("Could not deserialize bitmap for key #%d: %s", i, err)
 		}
 		p += int64(n)
 	}
-
 	return p, nil
 }
 
diff --git a/roaring64/roaring64cow_test.go b/roaring64/roaring64cow_test.go
index b3b7bee9..7466e56c 100644
--- a/roaring64/roaring64cow_test.go
+++ b/roaring64/roaring64cow_test.go
@@ -1481,7 +1481,6 @@ func TestBigRandomCOW(t *testing.T) {
 }
 
 func rTestCOW(t *testing.T, N int) {
-	log.Println("rtest N=", N)
 	for gap := 1; gap <= 65536; gap *= 2 {
 		bs1 := bitset.New(0)
 		rb1 := NewBitmap()
diff --git a/roaring64/serialization_test.go b/roaring64/serialization_test.go
index 5660133f..7655d8b8 100644
--- a/roaring64/serialization_test.go
+++ b/roaring64/serialization_test.go
@@ -20,13 +20,13 @@ import (
 func fromUnsafeBytesChecked(t *testing.T, unsafeBm *Bitmap, b []byte) {
 	var r bytes.Reader
 	r.Reset(b)
-	var safeBm Bitmap
+	safeBm := NewBitmap()
 	safeCount, err := safeBm.ReadFrom(&r)
 	unsafeCount, err := unsafeBm.FromUnsafeBytes(b)
 	require.NoError(t, err)
 	require.NoError(t, err)
-	assert.EqualValues(t, safeCount, unsafeCount)
 	assert.True(t, safeBm.Equals(unsafeBm))
+	assert.EqualValues(t, safeCount, unsafeCount)
 }
 
 func TestSerializationOfEmptyBitmap(t *testing.T) {
diff --git a/roaring_test.go b/roaring_test.go
index cd299bc1..520da6ab 100644
--- a/roaring_test.go
+++ b/roaring_test.go
@@ -95,8 +95,6 @@ func checkValidity(t *testing.T, rb *Bitmap) {
 }
 
 func hashTest(t *testing.T, N uint64) {
-	t.Log("rtest N=", N)
-
 	hashes := map[uint64]struct{}{}
 	count := 0
 
@@ -1944,7 +1942,6 @@ func TestHash(t *testing.T) {
 }
 
 func rTest(t *testing.T, N int) {
-	t.Log("rtest N=", N)
 	for gap := 1; gap <= 65536; gap *= 2 {
 		bs1 := bitset.New(0)
 		rb1 := NewBitmap()
diff --git a/roaringcow_test.go b/roaringcow_test.go
index 94d07acb..c04acae4 100644
--- a/roaringcow_test.go
+++ b/roaringcow_test.go
@@ -1533,7 +1533,6 @@ func TestBigRandomCOW(t *testing.T) {
 }
 
 func rTestCOW(t *testing.T, N int) {
-	t.Log("rtest N=", N)
 	for gap := 1; gap <= 65536; gap *= 2 {
 		bs1 := bitset.New(0)
 		rb1 := NewBitmap()