diff --git a/dd-trace-core/src/main/java/datadog/trace/core/CoreTracer.java b/dd-trace-core/src/main/java/datadog/trace/core/CoreTracer.java
index 59325f25632..28f9e39c710 100644
--- a/dd-trace-core/src/main/java/datadog/trace/core/CoreTracer.java
+++ b/dd-trace-core/src/main/java/datadog/trace/core/CoreTracer.java
@@ -904,7 +904,7 @@ private CoreTracer(
     this.allowInferredServices = SpanNaming.instance().namingSchema().allowInferredServices();
     if (profilingContextIntegration != ProfilingContextIntegration.NoOp.INSTANCE) {
       TagMap tmp = TagMap.fromMap(localRootSpanTags);
-      tmp.put(PROFILING_CONTEXT_ENGINE, profilingContextIntegration.name());
+      tmp.set(PROFILING_CONTEXT_ENGINE, profilingContextIntegration.name());
       this.localRootSpanTags = tmp.freeze();
     } else {
       this.localRootSpanTags = TagMap.fromMapImmutable(localRootSpanTags);