diff --git a/src/Jenssegers/Mongodb/Eloquent/Model.php b/src/Jenssegers/Mongodb/Eloquent/Model.php
index 6b931e468..ef5e87184 100644
--- a/src/Jenssegers/Mongodb/Eloquent/Model.php
+++ b/src/Jenssegers/Mongodb/Eloquent/Model.php
@@ -228,7 +228,7 @@ public function getCasts()
     /**
      * @inheritdoc
      */
-    protected function originalIsEquivalent($key, $current)
+    public function originalIsEquivalent($key, $current)
     {
         if (!array_key_exists($key, $this->original)) {
             return false;