diff --git a/internal/pipewire/header.go b/internal/pipewire/header.go
index 89d50ef..40ea080 100644
--- a/internal/pipewire/header.go
+++ b/internal/pipewire/header.go
@@ -22,14 +22,14 @@ var (
 // A Header is the fixed-size message header described in protocol native.
 type Header struct {
 	// The message id this is the destination resource/proxy id.
-	ID Word `json:"Id"`
+	ID Int `json:"Id"`
 	// The opcode on the resource/proxy interface.
 	Opcode byte `json:"opcode"`
 	// The size of the payload and optional footer of the message.
 	// Note: this value is only 24 bits long in the format.
 	Size uint32 `json:"size"`
 	// An increasing sequence number for each message.
-	Sequence Word `json:"seq"`
+	Sequence Int `json:"seq"`
 	// Number of file descriptors in this message.
 	FileCount Word `json:"n_fds"`
 }
@@ -38,9 +38,9 @@ type Header struct {
 //
 // Callers must perform bounds check on [Header.Size].
 func (h *Header) append(data []byte) []byte {
-	data = binary.NativeEndian.AppendUint32(data, h.ID)
+	data = binary.NativeEndian.AppendUint32(data, Word(h.ID))
 	data = binary.NativeEndian.AppendUint32(data, Word(h.Opcode)<<24|h.Size)
-	data = binary.NativeEndian.AppendUint32(data, h.Sequence)
+	data = binary.NativeEndian.AppendUint32(data, Word(h.Sequence))
 	data = binary.NativeEndian.AppendUint32(data, h.FileCount)
 	return data
 }
@@ -55,11 +55,11 @@ func (h *Header) MarshalBinary() (data []byte, err error) {
 
 // unmarshalBinary decodes the protocol native message header.
 func (h *Header) unmarshalBinary(data [SizeHeader]byte) {
-	h.ID = binary.NativeEndian.Uint32(data[0:4])
+	h.ID = Int(binary.NativeEndian.Uint32(data[0:4]))
 	h.Size = binary.NativeEndian.Uint32(data[4:8])
 	h.Opcode = byte(h.Size >> 24)
 	h.Size &= SizeMax
-	h.Sequence = binary.NativeEndian.Uint32(data[8:])
+	h.Sequence = Int(binary.NativeEndian.Uint32(data[8:]))
 	h.FileCount = binary.NativeEndian.Uint32(data[12:])
 }