diff --git a/display_matrix.go b/display_matrix.go
index 0d00248..6c6c068 100644
--- a/display_matrix.go
+++ b/display_matrix.go
@@ -11,13 +11,16 @@ import (
 
 type DisplayMatrix [9]uint32
 
-func NewDisplayMatrixFromBytes(b []byte) (m DisplayMatrix, err error) {
+func NewDisplayMatrixFromBytes(b []byte) (m *DisplayMatrix, err error) {
 	// Check length
 	if len(b) < 36 {
 		err = fmt.Errorf("astiav: invalid length %d < 36", len(b))
 		return
 	}
 
+	// Create display matrix
+	m = &DisplayMatrix{}
+
 	// Loop
 	for idx := 0; idx < 9; idx++ {
 		m[idx] = binary.BigEndian.Uint32(b[idx*4 : (idx+1)*4])
diff --git a/display_matrix_test.go b/display_matrix_test.go
index 6286cc8..6c357ee 100644
--- a/display_matrix_test.go
+++ b/display_matrix_test.go
@@ -11,6 +11,6 @@ func TestDisplayMatrix(t *testing.T) {
 	require.Error(t, err)
 	dm, err := NewDisplayMatrixFromBytes([]byte{0, 0, 0, 0, 0, 0, 255, 255, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64})
 	require.NoError(t, err)
-	require.Equal(t, DisplayMatrix{0x0, 0xffff, 0x0, 0x100, 0x0, 0x0, 0x0, 0x0, 0x40}, dm)
+	require.Equal(t, DisplayMatrix{0x0, 0xffff, 0x0, 0x100, 0x0, 0x0, 0x0, 0x0, 0x40}, *dm)
 	require.Equal(t, float64(-90), dm.Rotation())
 }