diff --git a/tests/ConnectionTest.php b/tests/ConnectionTest.php
index eae42842..56f4ecfc 100644
--- a/tests/ConnectionTest.php
+++ b/tests/ConnectionTest.php
@@ -147,8 +147,6 @@ public function testNotRestartConnectionOnTimeoutInTransaction(): void
         $db = $this->getConnection();
         $db->beginTransaction();
 
-        $db->getPDO()->errorCode();
-
         $db->createCommand('SET SESSION wait_timeout = 1')->execute();
 
         sleep(1);