diff --git a/docs/topics/media-pipeline.rst b/docs/topics/media-pipeline.rst
index 1e0e0f18f..67a0bfdba 100644
--- a/docs/topics/media-pipeline.rst
+++ b/docs/topics/media-pipeline.rst
@@ -410,7 +410,7 @@ See here the methods that you can override in your custom Files Pipeline:
 
 .. class:: FilesPipeline
 
-   .. method:: file_path(request, response, info)
+   .. method:: file_path(self, request, response=None, info=None)
 
       This method is called once per downloaded item. It returns the
       download path of the file originating from the specified
@@ -434,7 +434,7 @@ See here the methods that you can override in your custom Files Pipeline:
 
         class MyFilesPipeline(FilesPipeline):
 
-            def file_path(self, request, response, info):
+            def file_path(self, request, response=None, info=None):
                 return 'files/' + os.path.basename(urlparse(request.url).path)
 
       By default the :meth:`file_path` method returns
@@ -524,7 +524,7 @@ See here the methods that you can override in your custom Images Pipeline:
     The :class:`ImagesPipeline` is an extension of the :class:`FilesPipeline`,
     customizing the field names and adding custom behavior for images.
 
-   .. method:: file_path(request, response, info)
+   .. method:: file_path(self, request, response=None, info=None)
 
       This method is called once per downloaded item. It returns the
       download path of the file originating from the specified
@@ -548,7 +548,7 @@ See here the methods that you can override in your custom Images Pipeline:
 
         class MyImagesPipeline(ImagesPipeline):
 
-            def file_path(self, request, response, info):
+            def file_path(self, request, response=None, info=None):
                 return 'files/' + os.path.basename(urlparse(request.url).path)
 
       By default the :meth:`file_path` method returns