diff --git a/Classes/Service/BaseEmailService.php b/Classes/Service/BaseEmailService.php
index 7ffb572..6c91709 100644
--- a/Classes/Service/BaseEmailService.php
+++ b/Classes/Service/BaseEmailService.php
@@ -64,8 +64,8 @@ public function sendEmail(array $mailTo, array $mailFrom, string $subject, array
 
         $message = $this->createMailMessage()
             ->subject($subject)
-            ->to(new Address(key($mailTo), current($mailTo) || ''))
-            ->from(new Address(key($mailFrom), current($mailFrom) || ''));
+            ->to(new Address(key($mailTo), current($mailTo) ?? ''))
+            ->from(new Address(key($mailFrom), current($mailFrom) ?? ''));
 
 		// @extensionScannerIgnoreLine
         return $this->send($message, $variables, $templateFile);