diff --git a/pkg/sync/p2p_message_size.go b/pkg/sync/p2p_message_size.go
new file mode 100644
index 0000000000..e7a7bb9b98
--- /dev/null
+++ b/pkg/sync/p2p_message_size.go
@@ -0,0 +1,13 @@
+package sync
+
+import (
+	"github.com/celestiaorg/go-libp2p-messenger/serde"
+
+	"github.com/evstack/ev-node/pkg/blobsize"
+)
+
+func init() {
+	// go-header wraps block data in another protobuf message, so leave room for
+	// framing overhead beyond the maximum block payload.
+	serde.MaxMessageSize = 2 * blobsize.DefaultMaxBlobSize
+}
diff --git a/pkg/sync/p2p_message_size_test.go b/pkg/sync/p2p_message_size_test.go
new file mode 100644
index 0000000000..63dd16e80c
--- /dev/null
+++ b/pkg/sync/p2p_message_size_test.go
@@ -0,0 +1,34 @@
+package sync
+
+import (
+	"encoding/binary"
+	"testing"
+
+	p2ppb "github.com/celestiaorg/go-header/p2p/pb"
+	"github.com/celestiaorg/go-libp2p-messenger/serde"
+	"github.com/stretchr/testify/require"
+
+	"github.com/evstack/ev-node/pkg/blobsize"
+	"github.com/evstack/ev-node/types"
+)
+
+func TestP2PMessageSizeSupportsMaxBlob(t *testing.T) {
+	data := &types.P2PData{
+		Data: &types.Data{
+			Metadata: &types.Metadata{
+				ChainID: "test-chain",
+				Height:  1,
+				Time:    1,
+			},
+			Txs: types.Txs{make([]byte, int(blobsize.DefaultMaxBlobSize))},
+		},
+	}
+
+	body, err := data.MarshalBinary()
+	require.NoError(t, err)
+
+	response := &p2ppb.HeaderResponse{Body: body}
+	buf := make([]byte, response.Size()+binary.MaxVarintLen64)
+	_, err = serde.Marshal(response, buf)
+	require.NoError(t, err)
+}