diff --git a/src/Drivers/Zipkin/ZipkinTracer.php b/src/Drivers/Zipkin/ZipkinTracer.php
index 580e131..e09dcd3 100644
--- a/src/Drivers/Zipkin/ZipkinTracer.php
+++ b/src/Drivers/Zipkin/ZipkinTracer.php
@@ -320,7 +320,7 @@ public function flush(): void
     protected function createReporter(): Reporter
     {
         if (!$this->reporter) {
-            return new HttpReporter(null, [
+            return new HttpReporter([
                 'endpoint_url' => sprintf('http://%s:%s/api/v2/spans', $this->host, $this->port),
                 'timeout' => $this->requestTimeout,
             ]);