diff --git a/docs/index.rst b/docs/index.rst
index 04a8c921..9a477572 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -25,8 +25,8 @@ main process, even on a remote machine.
 There is **no requirement for installing packages, copying files around,
 writing shell scripts, upfront configuration, or providing any secondary link
 to the remote machine**. Due to its origins for use in managing potentially
-damaged infrastructure, the **remote machine need not even have a writeable
-filesystem**.
+damaged infrastructure, the **remote machine need not even have free disk space
+or a writeable filesystem**.
 
 It is not intended as a generic RPC framework; the goal is to provide a robust
 and efficient low-level API on which tools like `Salt`_ or `Ansible`_ can be