diff --git a/src/Monolog/Processor/TagProcessor.php b/src/Monolog/Processor/TagProcessor.php
index 8222ef44..2784cef4 100644
--- a/src/Monolog/Processor/TagProcessor.php
+++ b/src/Monolog/Processor/TagProcessor.php
@@ -27,7 +27,7 @@ class TagProcessor
 
     public function __invoke(array $record)
     {
-        $record['tags'] = $this->tags;
+        $record['extra']['tags'] = $this->tags;
 
         return $record;
     }