diff --git a/doc/maintaining/datastore.rst b/doc/maintaining/datastore.rst
index ab615fe3656..9b3460da44d 100644
--- a/doc/maintaining/datastore.rst
+++ b/doc/maintaining/datastore.rst
@@ -207,6 +207,8 @@ alongside CKAN.
 
 To install this please look at the docs here: http://docs.ckan.org/projects/datapusher
 
+.. note:: The DataPusher only imports the first worksheet of a spreadsheet. It also does
+   not support duplicate column headers. That includes blank column headings.
 
 .. _data_dictionary: