diff --git a/docs/local.rst b/docs/local.rst
index 7d285881..3a4dd4c9 100644
--- a/docs/local.rst
+++ b/docs/local.rst
@@ -69,6 +69,8 @@ To download only a sample of the available data, add the ``sample=true`` spider
 
 Scrapy will then output a log of its activity.
 
+Note that ``_sample`` will be added to the directory for the spider, e.g. ``kingfisher-collect/data/zambia_sample``
+
 .. _proxy:
 
 Use a proxy