diff --git a/src/Model.php b/src/Model.php
index a684e7d..e7452dd 100644
--- a/src/Model.php
+++ b/src/Model.php
@@ -763,6 +763,10 @@ protected function asJson($value)
      */
     public function fromJson($value, $asObject = false)
     {
+        if (is_array($value)) {
+            return $value;
+        }
+        
         return json_decode($value, ! $asObject);
     }