diff --git a/docs/topics/spiders.rst b/docs/topics/spiders.rst
index 4e969498d..6586db668 100644
--- a/docs/topics/spiders.rst
+++ b/docs/topics/spiders.rst
@@ -61,7 +61,8 @@ Spiders receive arguments in their constructors::
     class MySpider(BaseSpider):
         name = 'myspider'
 
-        def __init__(self, category=None):
+        def __init__(self, category=None, *args, **kwargs):
+            super(MySpider, self).__init__(*args, **kwargs)
             self.start_urls = ['http://www.example.com/categories/%s' % category]
             # ...