1 files changed, 4 insertions, 4 deletions
diff --git a/u/trace/trace.ts b/u/trace/trace.ts
index 72d4eef..e942066 100644
--- a/u/trace/trace.ts
+++ b/u/trace/trace.ts
@@ -41,18 +41,18 @@ export type LogMetricTraceSupplier = ITraceWith<
 >;
 export class LogMetricTrace implements ITrace<LogMetricTraceSupplier> {
   constructor(
-    private readonly logTrace: ITrace<LogTraceSupplier>,
-    private readonly metricsTrace: ITrace<MetricsTraceSupplier>,
+    private logTrace: ITrace<LogTraceSupplier>,
+    private metricsTrace: ITrace<MetricsTraceSupplier>,
   ) {}
 
   public addTrace(
     trace: LogTraceSupplier | MetricsTraceSupplier,
   ): LogMetricTrace {
     if (isMetricsTraceSupplier(trace)) {
-      this.metricsTrace.addTrace(trace);
+      this.metricsTrace = this.metricsTrace.addTrace(trace);
       return this;
     }
-    this.logTrace.addTrace(trace);
+    this.logTrace = this.logTrace.addTrace(trace);
     return this;
   }