diff --git a/receiver/kafkareceiver/factory.go b/receiver/kafkareceiver/factory.go
index fe637883d2b..bfc51ec41a1 100644
--- a/receiver/kafkareceiver/factory.go
+++ b/receiver/kafkareceiver/factory.go
@@ -44,11 +44,11 @@ const (
 // FactoryOption applies changes to kafkaReceiverFactory.
 type FactoryOption func(factory *kafkaReceiverFactory)
 
-// WithAddUnmarshallers adds marshallers.
-func WithAddUnmarshallers(encodingMarshaller map[string]Unmarshaller) FactoryOption {
+// WithAddTracesUnmarshallers adds marshallers.
+func WithAddTracesUnmarshallers(encodingMarshaller map[string]TracesUnmarshaller) FactoryOption {
 	return func(factory *kafkaReceiverFactory) {
 		for encoding, unmarshaller := range encodingMarshaller {
-			factory.unmarshalers[encoding] = unmarshaller
+			factory.tracesUnmarshalers[encoding] = unmarshaller
 		}
 	}
 }
@@ -65,8 +65,8 @@ func WithAddLogsUnmarshallers(encodingMarshaller map[string]LogsUnmarshaller) Fa
 // NewFactory creates Kafka receiver factory.
 func NewFactory(options ...FactoryOption) component.ReceiverFactory {
 	f := &kafkaReceiverFactory{
-		unmarshalers:     defaultUnmarshallers(),
-		logsUnmarshaller: defaultLogsUnmarshallers(),
+		tracesUnmarshalers: defaultTracesUnmarshallers(),
+		logsUnmarshaller:   defaultLogsUnmarshallers(),
 	}
 	for _, o := range options {
 		o(f)
@@ -101,8 +101,8 @@ func createDefaultConfig() config.Receiver {
 }
 
 type kafkaReceiverFactory struct {
-	unmarshalers     map[string]Unmarshaller
-	logsUnmarshaller map[string]LogsUnmarshaller
+	tracesUnmarshalers map[string]TracesUnmarshaller
+	logsUnmarshaller   map[string]LogsUnmarshaller
 }
 
 func (f *kafkaReceiverFactory) createTracesReceiver(
@@ -112,7 +112,7 @@ func (f *kafkaReceiverFactory) createTracesReceiver(
 	nextConsumer consumer.Traces,
 ) (component.TracesReceiver, error) {
 	c := cfg.(*Config)
-	r, err := newReceiver(*c, params, f.unmarshalers, nextConsumer)
+	r, err := newTracesReceiver(*c, params, f.tracesUnmarshalers, nextConsumer)
 	if err != nil {
 		return nil, err
 	}
diff --git a/receiver/kafkareceiver/factory_test.go b/receiver/kafkareceiver/factory_test.go
index bd6b0fb6b1c..9d523229ab6 100644
--- a/receiver/kafkareceiver/factory_test.go
+++ b/receiver/kafkareceiver/factory_test.go
@@ -40,7 +40,7 @@ func TestCreateTracesReceiver(t *testing.T) {
 	cfg := createDefaultConfig().(*Config)
 	cfg.Brokers = []string{"invalid:9092"}
 	cfg.ProtocolVersion = "2.0.0"
-	f := kafkaReceiverFactory{unmarshalers: defaultUnmarshallers()}
+	f := kafkaReceiverFactory{tracesUnmarshalers: defaultTracesUnmarshallers()}
 	r, err := f.createTracesReceiver(context.Background(), component.ReceiverCreateParams{}, cfg, nil)
 	// no available broker
 	require.Error(t, err)
@@ -52,15 +52,15 @@ func TestCreateTracesReceiver_error(t *testing.T) {
 	cfg.ProtocolVersion = "2.0.0"
 	// disable contacting broker at startup
 	cfg.Metadata.Full = false
-	f := kafkaReceiverFactory{unmarshalers: defaultUnmarshallers()}
+	f := kafkaReceiverFactory{tracesUnmarshalers: defaultTracesUnmarshallers()}
 	r, err := f.createTracesReceiver(context.Background(), component.ReceiverCreateParams{}, cfg, nil)
 	require.NoError(t, err)
 	assert.NotNil(t, r)
 }
 
-func TestWithUnmarshallers(t *testing.T) {
-	unmarshaller := &customUnmarshaller{}
-	f := NewFactory(WithAddUnmarshallers(map[string]Unmarshaller{unmarshaller.Encoding(): unmarshaller}))
+func TestWithTracesUnmarshallers(t *testing.T) {
+	unmarshaller := &customTracesUnmarshaller{}
+	f := NewFactory(WithAddTracesUnmarshallers(map[string]TracesUnmarshaller{unmarshaller.Encoding(): unmarshaller}))
 	cfg := createDefaultConfig().(*Config)
 	// disable contacting broker
 	cfg.Metadata.Full = false
@@ -124,19 +124,19 @@ func TestWithLogsUnmarshallers(t *testing.T) {
 	})
 }
 
-type customUnmarshaller struct {
+type customTracesUnmarshaller struct {
 }
 
 type customLogsUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*customUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*customTracesUnmarshaller)(nil)
 
-func (c customUnmarshaller) Unmarshal([]byte) (pdata.Traces, error) {
+func (c customTracesUnmarshaller) Unmarshal([]byte) (pdata.Traces, error) {
 	panic("implement me")
 }
 
-func (c customUnmarshaller) Encoding() string {
+func (c customTracesUnmarshaller) Encoding() string {
 	return "custom"
 }
 
diff --git a/receiver/kafkareceiver/jaeger_unmarshaller.go b/receiver/kafkareceiver/jaeger_unmarshaller.go
index 579f7f6e1d5..6a48865f0eb 100644
--- a/receiver/kafkareceiver/jaeger_unmarshaller.go
+++ b/receiver/kafkareceiver/jaeger_unmarshaller.go
@@ -27,7 +27,7 @@ import (
 type jaegerProtoSpanUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*jaegerProtoSpanUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*jaegerProtoSpanUnmarshaller)(nil)
 
 func (j jaegerProtoSpanUnmarshaller) Unmarshal(bytes []byte) (pdata.Traces, error) {
 	span := &jaegerproto.Span{}
@@ -45,7 +45,7 @@ func (j jaegerProtoSpanUnmarshaller) Encoding() string {
 type jaegerJSONSpanUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*jaegerJSONSpanUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*jaegerJSONSpanUnmarshaller)(nil)
 
 func (j jaegerJSONSpanUnmarshaller) Unmarshal(data []byte) (pdata.Traces, error) {
 	span := &jaegerproto.Span{}
diff --git a/receiver/kafkareceiver/jaeger_unmarshaller_test.go b/receiver/kafkareceiver/jaeger_unmarshaller_test.go
index 919488ca12d..af3aa4574c3 100644
--- a/receiver/kafkareceiver/jaeger_unmarshaller_test.go
+++ b/receiver/kafkareceiver/jaeger_unmarshaller_test.go
@@ -47,7 +47,7 @@ func TestUnmarshallJaeger(t *testing.T) {
 	jsonMarshaller.Marshal(jsonBytes, batches[0].Spans[0])
 
 	tests := []struct {
-		unmarshaller Unmarshaller
+		unmarshaller TracesUnmarshaller
 		encoding     string
 		bytes        []byte
 	}{
diff --git a/receiver/kafkareceiver/kafka_receiver.go b/receiver/kafkareceiver/kafka_receiver.go
index 65825a1118a..42164259540 100644
--- a/receiver/kafkareceiver/kafka_receiver.go
+++ b/receiver/kafkareceiver/kafka_receiver.go
@@ -36,14 +36,14 @@ const (
 
 var errUnrecognizedEncoding = fmt.Errorf("unrecognized encoding")
 
-// kafkaConsumer uses sarama to consume and handle messages from kafka.
-type kafkaConsumer struct {
+// kafkaTracesConsumer uses sarama to consume and handle messages from kafka.
+type kafkaTracesConsumer struct {
 	name              string
 	consumerGroup     sarama.ConsumerGroup
 	nextConsumer      consumer.Traces
 	topics            []string
 	cancelConsumeLoop context.CancelFunc
-	unmarshaller      Unmarshaller
+	unmarshaller      TracesUnmarshaller
 
 	logger *zap.Logger
 }
@@ -60,10 +60,10 @@ type kafkaLogsConsumer struct {
 	logger *zap.Logger
 }
 
-var _ component.Receiver = (*kafkaConsumer)(nil)
+var _ component.Receiver = (*kafkaTracesConsumer)(nil)
 var _ component.Receiver = (*kafkaLogsConsumer)(nil)
 
-func newReceiver(config Config, params component.ReceiverCreateParams, unmarshalers map[string]Unmarshaller, nextConsumer consumer.Traces) (*kafkaConsumer, error) {
+func newTracesReceiver(config Config, params component.ReceiverCreateParams, unmarshalers map[string]TracesUnmarshaller, nextConsumer consumer.Traces) (*kafkaTracesConsumer, error) {
 	unmarshaller := unmarshalers[config.Encoding]
 	if unmarshaller == nil {
 		return nil, errUnrecognizedEncoding
@@ -88,7 +88,7 @@ func newReceiver(config Config, params component.ReceiverCreateParams, unmarshal
 	if err != nil {
 		return nil, err
 	}
-	return &kafkaConsumer{
+	return &kafkaTracesConsumer{
 		name:          config.Name(),
 		consumerGroup: client,
 		topics:        []string{config.Topic},
@@ -98,10 +98,10 @@ func newReceiver(config Config, params component.ReceiverCreateParams, unmarshal
 	}, nil
 }
 
-func (c *kafkaConsumer) Start(context.Context, component.Host) error {
+func (c *kafkaTracesConsumer) Start(context.Context, component.Host) error {
 	ctx, cancel := context.WithCancel(context.Background())
 	c.cancelConsumeLoop = cancel
-	consumerGroup := &consumerGroupHandler{
+	consumerGroup := &tracesConsumerGroupHandler{
 		name:         c.name,
 		logger:       c.logger,
 		unmarshaller: c.unmarshaller,
@@ -113,7 +113,7 @@ func (c *kafkaConsumer) Start(context.Context, component.Host) error {
 	return nil
 }
 
-func (c *kafkaConsumer) consumeLoop(ctx context.Context, handler sarama.ConsumerGroupHandler) error {
+func (c *kafkaTracesConsumer) consumeLoop(ctx context.Context, handler sarama.ConsumerGroupHandler) error {
 	for {
 		// `Consume` should be called inside an infinite loop, when a
 		// server-side rebalance happens, the consumer session will need to be
@@ -129,7 +129,7 @@ func (c *kafkaConsumer) consumeLoop(ctx context.Context, handler sarama.Consumer
 	}
 }
 
-func (c *kafkaConsumer) Shutdown(context.Context) error {
+func (c *kafkaTracesConsumer) Shutdown(context.Context) error {
 	c.cancelConsumeLoop()
 	return c.consumerGroup.Close()
 }
@@ -205,9 +205,9 @@ func (c *kafkaLogsConsumer) Shutdown(context.Context) error {
 	return c.consumerGroup.Close()
 }
 
-type consumerGroupHandler struct {
+type tracesConsumerGroupHandler struct {
 	name         string
-	unmarshaller Unmarshaller
+	unmarshaller TracesUnmarshaller
 	nextConsumer consumer.Traces
 	ready        chan bool
 	readyCloser  sync.Once
@@ -225,10 +225,10 @@ type logsConsumerGroupHandler struct {
 	logger *zap.Logger
 }
 
-var _ sarama.ConsumerGroupHandler = (*consumerGroupHandler)(nil)
+var _ sarama.ConsumerGroupHandler = (*tracesConsumerGroupHandler)(nil)
 var _ sarama.ConsumerGroupHandler = (*logsConsumerGroupHandler)(nil)
 
-func (c *consumerGroupHandler) Setup(session sarama.ConsumerGroupSession) error {
+func (c *tracesConsumerGroupHandler) Setup(session sarama.ConsumerGroupSession) error {
 	c.readyCloser.Do(func() {
 		close(c.ready)
 	})
@@ -237,13 +237,13 @@ func (c *consumerGroupHandler) Setup(session sarama.ConsumerGroupSession) error
 	return nil
 }
 
-func (c *consumerGroupHandler) Cleanup(session sarama.ConsumerGroupSession) error {
+func (c *tracesConsumerGroupHandler) Cleanup(session sarama.ConsumerGroupSession) error {
 	statsTags := []tag.Mutator{tag.Insert(tagInstanceName, c.name)}
 	_ = stats.RecordWithTags(session.Context(), statsTags, statPartitionClose.M(1))
 	return nil
 }
 
-func (c *consumerGroupHandler) ConsumeClaim(session sarama.ConsumerGroupSession, claim sarama.ConsumerGroupClaim) error {
+func (c *tracesConsumerGroupHandler) ConsumeClaim(session sarama.ConsumerGroupSession, claim sarama.ConsumerGroupClaim) error {
 	c.logger.Info("Starting consumer group", zap.Int32("partition", claim.Partition()))
 	for message := range claim.Messages() {
 		c.logger.Debug("Kafka message claimed",
diff --git a/receiver/kafkareceiver/kafka_receiver_test.go b/receiver/kafkareceiver/kafka_receiver_test.go
index 114612a263f..2e290f3459f 100644
--- a/receiver/kafkareceiver/kafka_receiver_test.go
+++ b/receiver/kafkareceiver/kafka_receiver_test.go
@@ -38,27 +38,27 @@ import (
 	"go.opentelemetry.io/collector/internal/testdata"
 )
 
-func TestNewReceiver_version_err(t *testing.T) {
+func TestNewTracesReceiver_version_err(t *testing.T) {
 	c := Config{
 		Encoding:        defaultEncoding,
 		ProtocolVersion: "none",
 	}
-	r, err := newReceiver(c, component.ReceiverCreateParams{}, defaultUnmarshallers(), consumertest.NewNop())
+	r, err := newTracesReceiver(c, component.ReceiverCreateParams{}, defaultTracesUnmarshallers(), consumertest.NewNop())
 	assert.Error(t, err)
 	assert.Nil(t, r)
 }
 
-func TestNewReceiver_encoding_err(t *testing.T) {
+func TestNewTracesReceiver_encoding_err(t *testing.T) {
 	c := Config{
 		Encoding: "foo",
 	}
-	r, err := newReceiver(c, component.ReceiverCreateParams{}, defaultUnmarshallers(), consumertest.NewNop())
+	r, err := newTracesReceiver(c, component.ReceiverCreateParams{}, defaultTracesUnmarshallers(), consumertest.NewNop())
 	require.Error(t, err)
 	assert.Nil(t, r)
 	assert.EqualError(t, err, errUnrecognizedEncoding.Error())
 }
 
-func TestNewReceiver_err_auth_type(t *testing.T) {
+func TestNewTracesReceiver_err_auth_type(t *testing.T) {
 	c := Config{
 		ProtocolVersion: "2.0.0",
 		Authentication: kafkaexporter.Authentication{
@@ -73,15 +73,15 @@ func TestNewReceiver_err_auth_type(t *testing.T) {
 			Full: false,
 		},
 	}
-	r, err := newReceiver(c, component.ReceiverCreateParams{}, defaultUnmarshallers(), consumertest.NewNop())
+	r, err := newTracesReceiver(c, component.ReceiverCreateParams{}, defaultTracesUnmarshallers(), consumertest.NewNop())
 	assert.Error(t, err)
 	assert.Contains(t, err.Error(), "failed to load TLS config")
 	assert.Nil(t, r)
 }
 
-func TestReceiverStart(t *testing.T) {
+func TestTracesReceiverStart(t *testing.T) {
 	testClient := testConsumerGroup{once: &sync.Once{}}
-	c := kafkaConsumer{
+	c := kafkaTracesConsumer{
 		nextConsumer:  consumertest.NewNop(),
 		logger:        zap.NewNop(),
 		consumerGroup: testClient,
@@ -92,9 +92,9 @@ func TestReceiverStart(t *testing.T) {
 	c.Shutdown(context.Background())
 }
 
-func TestReceiverStartConsume(t *testing.T) {
+func TestTracesReceiverStartConsume(t *testing.T) {
 	testClient := testConsumerGroup{once: &sync.Once{}}
-	c := kafkaConsumer{
+	c := kafkaTracesConsumer{
 		nextConsumer:  consumertest.NewNop(),
 		logger:        zap.NewNop(),
 		consumerGroup: testClient,
@@ -102,19 +102,19 @@ func TestReceiverStartConsume(t *testing.T) {
 	ctx, cancelFunc := context.WithCancel(context.Background())
 	c.cancelConsumeLoop = cancelFunc
 	c.Shutdown(context.Background())
-	err := c.consumeLoop(ctx, &consumerGroupHandler{
+	err := c.consumeLoop(ctx, &tracesConsumerGroupHandler{
 		ready: make(chan bool),
 	})
 	assert.EqualError(t, err, context.Canceled.Error())
 }
 
-func TestReceiver_error(t *testing.T) {
+func TestTracesReceiver_error(t *testing.T) {
 	zcore, logObserver := observer.New(zapcore.ErrorLevel)
 	logger := zap.New(zcore)
 
 	expectedErr := fmt.Errorf("handler error")
 	testClient := testConsumerGroup{once: &sync.Once{}, err: expectedErr}
-	c := kafkaConsumer{
+	c := kafkaTracesConsumer{
 		nextConsumer:  consumertest.NewNop(),
 		logger:        logger,
 		consumerGroup: testClient,
@@ -129,12 +129,12 @@ func TestReceiver_error(t *testing.T) {
 	assert.True(t, logObserver.FilterField(zap.Error(expectedErr)).Len() > 0)
 }
 
-func TestConsumerGroupHandler(t *testing.T) {
+func TestTracesConsumerGroupHandler(t *testing.T) {
 	views := MetricViews()
 	view.Register(views...)
 	defer view.Unregister(views...)
 
-	c := consumerGroupHandler{
+	c := tracesConsumerGroupHandler{
 		unmarshaller: &otlpTracesPbUnmarshaller{},
 		logger:       zap.NewNop(),
 		ready:        make(chan bool),
@@ -177,8 +177,8 @@ func TestConsumerGroupHandler(t *testing.T) {
 	wg.Wait()
 }
 
-func TestConsumerGroupHandler_error_unmarshall(t *testing.T) {
-	c := consumerGroupHandler{
+func TestTracesConsumerGroupHandler_error_unmarshall(t *testing.T) {
+	c := tracesConsumerGroupHandler{
 		unmarshaller: &otlpTracesPbUnmarshaller{},
 		logger:       zap.NewNop(),
 		ready:        make(chan bool),
@@ -200,9 +200,9 @@ func TestConsumerGroupHandler_error_unmarshall(t *testing.T) {
 	wg.Wait()
 }
 
-func TestConsumerGroupHandler_error_nextConsumer(t *testing.T) {
+func TestTracesConsumerGroupHandler_error_nextConsumer(t *testing.T) {
 	consumerError := errors.New("failed to consumer")
-	c := consumerGroupHandler{
+	c := tracesConsumerGroupHandler{
 		unmarshaller: &otlpTracesPbUnmarshaller{},
 		logger:       zap.NewNop(),
 		ready:        make(chan bool),
@@ -419,8 +419,6 @@ func TestLogsConsumerGroupHandler_error_nextConsumer(t *testing.T) {
 	wg.Wait()
 }
 
-// end
-
 type testConsumerGroupClaim struct {
 	messageChan chan *sarama.ConsumerMessage
 }
diff --git a/receiver/kafkareceiver/otlp_unmarshaller.go b/receiver/kafkareceiver/otlp_unmarshaller.go
index a6dd53f5326..d798f547636 100644
--- a/receiver/kafkareceiver/otlp_unmarshaller.go
+++ b/receiver/kafkareceiver/otlp_unmarshaller.go
@@ -21,7 +21,7 @@ import (
 type otlpTracesPbUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*otlpTracesPbUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*otlpTracesPbUnmarshaller)(nil)
 
 func (p *otlpTracesPbUnmarshaller) Unmarshal(bytes []byte) (pdata.Traces, error) {
 	return pdata.TracesFromOtlpProtoBytes(bytes)
diff --git a/receiver/kafkareceiver/otlp_unmarshaller_test.go b/receiver/kafkareceiver/otlp_unmarshaller_test.go
index 2259e1f8aaf..350fa3f7cc1 100644
--- a/receiver/kafkareceiver/otlp_unmarshaller_test.go
+++ b/receiver/kafkareceiver/otlp_unmarshaller_test.go
@@ -24,7 +24,7 @@ import (
 	"go.opentelemetry.io/collector/internal/testdata"
 )
 
-func TestUnmarshallOTLP(t *testing.T) {
+func TestUnmarshallOTLPTraces(t *testing.T) {
 	td := pdata.NewTraces()
 	td.ResourceSpans().Resize(1)
 	td.ResourceSpans().At(0).Resource().Attributes().InsertString("foo", "bar")
@@ -40,7 +40,7 @@ func TestUnmarshallOTLP(t *testing.T) {
 	assert.Equal(t, "otlp_proto", p.Encoding())
 }
 
-func TestUnmarshallOTLP_error(t *testing.T) {
+func TestUnmarshallOTLPTraces_error(t *testing.T) {
 	p := otlpTracesPbUnmarshaller{}
 	_, err := p.Unmarshal([]byte("+$%"))
 	assert.Error(t, err)
diff --git a/receiver/kafkareceiver/unmarshaller.go b/receiver/kafkareceiver/unmarshaller.go
index 57973b75a0d..9ae6a23f70a 100644
--- a/receiver/kafkareceiver/unmarshaller.go
+++ b/receiver/kafkareceiver/unmarshaller.go
@@ -18,8 +18,8 @@ import (
 	"go.opentelemetry.io/collector/consumer/pdata"
 )
 
-// Unmarshaller deserializes the message body.
-type Unmarshaller interface {
+// TracesUnmarshaller deserializes the message body.
+type TracesUnmarshaller interface {
 	// Unmarshal deserializes the message body into traces.
 	Unmarshal([]byte) (pdata.Traces, error)
 
@@ -36,15 +36,15 @@ type LogsUnmarshaller interface {
 	Encoding() string
 }
 
-// defaultUnmarshallers returns map of supported encodings with Unmarshaller.
-func defaultUnmarshallers() map[string]Unmarshaller {
+// defaultTracesUnmarshallers returns map of supported encodings with TracesUnmarshaller.
+func defaultTracesUnmarshallers() map[string]TracesUnmarshaller {
 	otlp := &otlpTracesPbUnmarshaller{}
 	jaegerProto := jaegerProtoSpanUnmarshaller{}
 	jaegerJSON := jaegerJSONSpanUnmarshaller{}
 	zipkinProto := zipkinProtoSpanUnmarshaller{}
 	zipkinJSON := zipkinJSONSpanUnmarshaller{}
 	zipkinThrift := zipkinThriftSpanUnmarshaller{}
-	return map[string]Unmarshaller{
+	return map[string]TracesUnmarshaller{
 		otlp.Encoding():         otlp,
 		jaegerProto.Encoding():  jaegerProto,
 		jaegerJSON.Encoding():   jaegerJSON,
diff --git a/receiver/kafkareceiver/unmarshaller_test.go b/receiver/kafkareceiver/unmarshaller_test.go
index 8c6b39ed834..c7795b8db25 100644
--- a/receiver/kafkareceiver/unmarshaller_test.go
+++ b/receiver/kafkareceiver/unmarshaller_test.go
@@ -21,7 +21,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestDefaultUnMarshaller(t *testing.T) {
+func TestDefaultTracesUnMarshaller(t *testing.T) {
 	expectedEncodings := []string{
 		"otlp_proto",
 		"jaeger_proto",
@@ -30,7 +30,7 @@ func TestDefaultUnMarshaller(t *testing.T) {
 		"zipkin_json",
 		"zipkin_thrift",
 	}
-	marshallers := defaultUnmarshallers()
+	marshallers := defaultTracesUnmarshallers()
 	assert.Equal(t, len(expectedEncodings), len(marshallers))
 	for _, e := range expectedEncodings {
 		t.Run(e, func(t *testing.T) {
diff --git a/receiver/kafkareceiver/zipkin_unmarshaller.go b/receiver/kafkareceiver/zipkin_unmarshaller.go
index 698cffa97f5..c873bae62be 100644
--- a/receiver/kafkareceiver/zipkin_unmarshaller.go
+++ b/receiver/kafkareceiver/zipkin_unmarshaller.go
@@ -29,7 +29,7 @@ import (
 type zipkinProtoSpanUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*zipkinProtoSpanUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*zipkinProtoSpanUnmarshaller)(nil)
 
 func (z zipkinProtoSpanUnmarshaller) Unmarshal(bytes []byte) (pdata.Traces, error) {
 	parseSpans, err := zipkin_proto3.ParseSpans(bytes, false)
@@ -46,7 +46,7 @@ func (z zipkinProtoSpanUnmarshaller) Encoding() string {
 type zipkinJSONSpanUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*zipkinJSONSpanUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*zipkinJSONSpanUnmarshaller)(nil)
 
 func (z zipkinJSONSpanUnmarshaller) Unmarshal(bytes []byte) (pdata.Traces, error) {
 	var spans []*zipkinmodel.SpanModel
@@ -63,7 +63,7 @@ func (z zipkinJSONSpanUnmarshaller) Encoding() string {
 type zipkinThriftSpanUnmarshaller struct {
 }
 
-var _ Unmarshaller = (*zipkinThriftSpanUnmarshaller)(nil)
+var _ TracesUnmarshaller = (*zipkinThriftSpanUnmarshaller)(nil)
 
 func (z zipkinThriftSpanUnmarshaller) Unmarshal(bytes []byte) (pdata.Traces, error) {
 	spans, err := deserializeZipkinThrift(bytes)
diff --git a/receiver/kafkareceiver/zipkin_unmarshaller_test.go b/receiver/kafkareceiver/zipkin_unmarshaller_test.go
index ed947672032..469f5859092 100644
--- a/receiver/kafkareceiver/zipkin_unmarshaller_test.go
+++ b/receiver/kafkareceiver/zipkin_unmarshaller_test.go
@@ -64,7 +64,7 @@ func TestUnmarshallZipkin(t *testing.T) {
 	require.NoError(t, err)
 
 	tests := []struct {
-		unmarshaller Unmarshaller
+		unmarshaller TracesUnmarshaller
 		encoding     string
 		bytes        []byte
 		expected     pdata.Traces