diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb
index a487bcf78b419..ad5a3e7562280 100644
--- a/activerecord/lib/active_record/attribute_methods/read.rb
+++ b/activerecord/lib/active_record/attribute_methods/read.rb
@@ -85,7 +85,7 @@ def read_attribute(attr_name)
       def _read_attribute(attr_name)
         attr_name = attr_name.to_s
         attr_name = self.class.primary_key if attr_name == 'id'
-        if (value = @attributes[attr_name])
+        if value = @attributes[attr_name]
           if column = column_for_attribute(attr_name)
             if unserializable_attribute?(attr_name, column)
               unserialize_attribute(attr_name)