diff --git a/src/Illuminate/Database/Eloquent/Model.php b/src/Illuminate/Database/Eloquent/Model.php
index 460672e6e58f..a05584347644 100644
--- a/src/Illuminate/Database/Eloquent/Model.php
+++ b/src/Illuminate/Database/Eloquent/Model.php
@@ -779,7 +779,7 @@ protected function performInsert(Builder $query)
         // If the model has an incrementing key, we can use the "insertGetId" method on
         // the query builder, which will give us back the final inserted ID for this
         // table from the database. Not all tables have to be incrementing though.
-        $attributes = $this->getAttributes();
+        $attributes = $this->getDirty();
 
         if ($this->getIncrementing()) {
             $this->insertAndSetId($query, $attributes);