diff --git a/src/Exceptions/CouldNotSendNotification.php b/src/Exceptions/CouldNotSendNotification.php
index 56e4d83..23dd148 100644
--- a/src/Exceptions/CouldNotSendNotification.php
+++ b/src/Exceptions/CouldNotSendNotification.php
@@ -6,6 +6,6 @@ class CouldNotSendNotification extends \Exception
 {
     public static function serviceRespondedWithAnError($response)
     {
-        return new static('OneSignal responded with an error: `'.$response->getBody()->getContents() . '`');
+        return new static('OneSignal responded with an error: `'.$response->getBody()->getContents().'`');
     }
 }