diff --git a/src/Testing/InteractsWithMail.php b/src/Testing/InteractsWithMail.php
index 4f77943..0cc72bd 100644
--- a/src/Testing/InteractsWithMail.php
+++ b/src/Testing/InteractsWithMail.php
@@ -18,7 +18,9 @@ private function setMailer(Mailer $mailer)
 
     private function getMailer()
     {
-        return $this->mailer ?: MailThief::getFacadeRoot();
+        return tap($this->mailer ?: MailThief::getFacadeRoot(), function ($mailer) {
+            $this->setMailer($mailer);
+        });
     }
 
     /**