diff --git a/pkg/log/fields.go b/pkg/log/fields.go
index 1b69a0d..271585d 100644
--- a/pkg/log/fields.go
+++ b/pkg/log/fields.go
@@ -30,9 +30,9 @@ const (
 	FieldTopic        = "topic"
 	FieldTxID         = "txID"
 	FieldURL          = "url"
-	FieldTraceID      = "traceID"
-	FieldSpanID       = "spanID"
-	FieldParentSpanID = "parentSpanID"
+	FieldTraceID      = "trace_id"
+	FieldSpanID       = "span_id"
+	FieldParentSpanID = "parent_span_id"
 )
 
 // WithError sets the error field.
diff --git a/pkg/log/fields_test.go b/pkg/log/fields_test.go
index cafead4..4e21aa9 100644
--- a/pkg/log/fields_test.go
+++ b/pkg/log/fields_test.go
@@ -117,9 +117,9 @@ type logData struct {
 	Logger       string `json:"logger"`
 	Caller       string `json:"caller"`
 	Error        string `json:"error"`
-	TraceID      string `json:"traceID"`
-	SpanID       string `json:"spanID"`
-	ParentSpanID string `json:"parentSpanID"`
+	TraceID      string `json:"trace_id"`
+	SpanID       string `json:"span_id"`
+	ParentSpanID string `json:"parent_span_id"`
 
 	HTTPStatus int    `json:"httpStatus"`
 	ID         string `json:"id"`
diff --git a/pkg/log/logger_test.go b/pkg/log/logger_test.go
index 821595c..db586e0 100644
--- a/pkg/log/logger_test.go
+++ b/pkg/log/logger_test.go
@@ -351,20 +351,24 @@ func TestContextLogger(t *testing.T) {
 
 		logger := New(module, WithStdOut(stdOut), WithStdErr(stdErr))
 
-		ctx, span := tracer.Start(context.Background(), "parent-span")
-		defer span.End()
+		ctx1, span1 := tracer.Start(context.Background(), "span1")
+		defer span1.End()
 
-		logger.Debugc(ctx, "Sample debug log")
-		logger.Infoc(ctx, "Sample info log")
-		logger.Warnc(ctx, "Sample warn log")
-		logger.Errorc(ctx, "Sample error log")
+		ctx2, span2 := tracer.Start(ctx1, "span2")
+		defer span2.End()
+
+		logger.Debugc(ctx2, "Sample debug log")
+		logger.Infoc(ctx2, "Sample info log")
+		logger.Warnc(ctx2, "Sample warn log")
+		logger.Errorc(ctx2, "Sample error log")
 
 		require.Panics(t, func() {
-			logger.Panicc(ctx, "Sample panic log")
+			logger.Panicc(ctx2, "Sample panic log")
 		})
 
-		require.Contains(t, stdOut.Buffer.String(), "traceID")
-		require.Contains(t, stdOut.Buffer.String(), "spanID")
+		require.Contains(t, stdOut.Buffer.String(), "trace_id")
+		require.Contains(t, stdOut.Buffer.String(), "span_id")
+		require.Contains(t, stdOut.Buffer.String(), "parent_span_id")
 	})
 }