diff --git a/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php b/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php
index 4fdd4a671f..b3b0959465 100644
--- a/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php
+++ b/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php
@@ -135,6 +135,7 @@ final class HttpClientDataCollector extends DataCollector
 
             $debugInfo = array_diff_key($info, $baseInfo);
             $info = array_diff_key($info, $debugInfo) + ['debug_info' => $debugInfo];
+            unset($traces[$i]['info']); // break PHP reference used by TraceableHttpClient
             $traces[$i]['info'] = $this->cloneVar($info);
             $traces[$i]['options'] = $this->cloneVar($trace['options']);
         }