diff --git a/src/sphinx/isabelle.rst b/src/sphinx/isabelle.rst
index c48fa16ebfe37d1ddce0400c56ffdea99fb2ba29..a375ccb4302926d839b2b8015b7af09d34b866cf 100644
--- a/src/sphinx/isabelle.rst
+++ b/src/sphinx/isabelle.rst
@@ -28,20 +28,10 @@ verification.
 Installation
 ------------
 
-You can obtain a copy of Isabelle for your operating system at `its website
-<https://isabelle.in.tum.de/>`_, then follow the `installation instructions
-<https://isabelle.in.tum.de/installation.html>`_. The installation path needs
-to be passed to Leon via the ``--isabelle:base`` command line option. (The path
-will end in ``Isabelle2015``. Depending on your operating system, this folder
-might be some levels into the installation tree.)
-
-On Linux, you can skip this step. Leon is able to download and install Isabelle
-itself. During the first start, you just need to pass the command line option
-``--isabelle:download=true``. You may specify ``--isabelle:base``, but don't
-have to.
-
-Additionally, you need to instruct Git to fetch all the referenced repositories
-via ``git submodule update --init --recursive``.
+You don't have to obtain a copy of Isabelle. Leon is able to download and
+install Isabelle itself. The installation happens in the appropriate folder for
+your operating system, e.g. ``%APPDATA%`` under Windows or ``$HOME/.local``
+under Linux.
 
 
 Basic usage
diff --git a/src/sphinx/options.rst b/src/sphinx/options.rst
index a5be01e35269e12864cd6716947727209497b337..38f18d0aef81eea7dd1006c92fda59f170b3f25e 100644
--- a/src/sphinx/options.rst
+++ b/src/sphinx/options.rst
@@ -313,27 +313,6 @@ CVC4 Solver
 Isabelle
 ********
 
-* ``--isabelle:base=<path>``
-
-  Specify the installation directory of Isabelle. In Isabelle-parlance, this is
-  called ``$ISABELLE_HOME``. It will have the form ``/path/to/Isabelle2015``.
-  When no Isabelle installation can be found there, the system suggests to
-  enable the ``download`` option.
-
-* ``--isabelle:build``
-
-  Flag to indicate that during the start-up of Leon, Isabelle should
-  automatically build all required library sources. This is on by default, and
-  should usually be left on. Building only happens when some dependencies
-  changed and subsequent runs of Leon don't rebuild the library. However, even
-  if nothing is build, it still requires the system a couple of seconds to
-  figure that out.
-
-* ``--isabelle:download``
-
-  If necessary, perform a full system bootstrap by downloading and unpacking a
-  copy of Isabelle. Off by default. Only supported under Linux.
-
 * ``--isabelle:dump=<path>``
 
   Makes the system write theory files containing the translated definitions