diff --git a/framework/behaviors/AttributeTypecastBehavior.php b/framework/behaviors/AttributeTypecastBehavior.php
index e2bde1b9a98..b4194634970 100644
--- a/framework/behaviors/AttributeTypecastBehavior.php
+++ b/framework/behaviors/AttributeTypecastBehavior.php
@@ -235,7 +235,7 @@ public function typecastAttributes($attributeNames = null)
         }
 
         foreach ($attributeTypes as $attribute => $type) {
-            $value = $this->owner->{$attribute};
+            $value = $this->owner->hasAttribute($attribute) ? $this->owner->{$attribute} : null;
             if ($this->skipOnNull && $value === null) {
                 continue;
             }