diff --git a/docs/settings.rst b/docs/settings.rst
index 427795c2..af5f94dd 100644
--- a/docs/settings.rst
+++ b/docs/settings.rst
@@ -142,6 +142,9 @@ Setting name (default value)                        what does it do?
 `TAG_SAVE_AS` ('tag/{name}.html')                   The location to save the tag page.
 ================================================    =====================================================
 
+Note: when any of `*_SAVE_AS` setting is set to none-value (including an empty string), files will not be
+created.
+
 Timezone
 --------