diff --git a/docs/vizier/vizier.rst b/docs/vizier/vizier.rst
index 05bfb8c560..f96099dd6e 100644
--- a/docs/vizier/vizier.rst
+++ b/docs/vizier/vizier.rst
@@ -49,7 +49,7 @@ Get a whole catalog
 
 From the result of the precedent example, let's select ``J/ApJ/788/39``.
 We call :meth:`~astroquery.vizier.VizierClass.get_catalogs`. Let's fix the number of
-returned rows to 1 for now while we inspect the result:
+returned rows to 1 for now, to minimize the amount of data we download and speed up exploration, while we inspect the result:
 
 .. doctest-remote-data::