diff --git a/src/Exceptions/GuardDoesNotMatch.php b/src/Exceptions/GuardDoesNotMatch.php
index d17b96d..9086988 100644
--- a/src/Exceptions/GuardDoesNotMatch.php
+++ b/src/Exceptions/GuardDoesNotMatch.php
@@ -9,13 +9,14 @@ class GuardDoesNotMatch extends InvalidArgumentException
 {
     public static function create(string $givenGuard, Collection $expectedGuards)
     {
-        $message = new static("The given role or permission should use guard `{$expectedGuards->implode(', ')}` instead of `{$givenGuard}`.");
+        $expect = $expectedGuards->implode(', ');
+        $message = new static("The given role or permission should use guard `{$expect}` instead of `{$givenGuard}`.");
 
         if (config('permission.log_registration_exception')) {
             $logger = app('log');
             $logger->alert($message);
         }
-        
+
         return $message;
     }
 }
diff --git a/src/Models/Permission.php b/src/Models/Permission.php
index ab0d0e8..36077fe 100644
--- a/src/Models/Permission.php
+++ b/src/Models/Permission.php
@@ -31,8 +31,10 @@ public static function create(array $attributes = [])
     {
         $attributes['guard_name'] = $attributes['guard_name'] ?? config('auth.defaults.guard');
 
-        if (static::getPermissions()->where('name', $attributes['name'])->where('guard_name',
-            $attributes['guard_name'])->first()) {
+        if (static::getPermissions()->where('name', $attributes['name'])->where(
+            'guard_name',
+            $attributes['guard_name']
+        )->first()) {
             throw PermissionAlreadyExists::create($attributes['name'], $attributes['guard_name']);
         }