diff --git a/src/Exceptions/InvalidClient.php b/src/Exceptions/InvalidClient.php
index d81260d..092acd6 100644
--- a/src/Exceptions/InvalidClient.php
+++ b/src/Exceptions/InvalidClient.php
@@ -19,6 +19,6 @@ class InvalidClient extends Exception
 
     public static function valueIsRequired($name, int $appId)
     {
-        return new static("{$name} is required but was empty for app id {$appId}");
+        return new static("{$name} is required but was empty for app id `{$appId}`.");
     }
 }
\ No newline at end of file