diff --git a/app/Mailman/Support/MailmanService.php b/app/Mailman/Support/MailmanService.php
index ffc85f36..bb75e4cd 100644
--- a/app/Mailman/Support/MailmanService.php
+++ b/app/Mailman/Support/MailmanService.php
@@ -85,7 +85,7 @@ class MailmanService
         return app(Paginator::class)->result(
             fn ($page) => $this->http()->get("/lists/{$list->listId}/roster/member?page={$page}&count=10"),
             function ($response) use ($list) {
-                throw_unless($response->ok(), MailmanServiceException::class, 'Fetching members for listId '.$list->listId.' failed.');
+                throw_unless($response->ok(), MailmanServiceException::class, 'Fetching members for listId ' . $list->listId . ' failed.');
                 /** @var array<int, array{email: string, self_link: string}>|null */
                 $entries = data_get($response->json(), 'entries', []);
                 throw_if(is_null($entries), MailmanServiceException::class, 'Failed getting member list from response');
@@ -112,7 +112,7 @@ class MailmanService
             'pre_confirmed' => 'true',
         ]);
 
-        throw_unless(201 === $response->status(), MailmanServiceException::class, 'Adding member '.$email.' to '.$list->listId.' failed');
+        throw_unless(201 === $response->status(), MailmanServiceException::class, 'Adding member ' . $email . ' to ' . $list->listId . ' failed');
     }
 
     public function removeMember(Member $member): void