diff --git a/docs/first-build.rst b/docs/first-build.rst
index fb79fb86..1664d95e 100644
--- a/docs/first-build.rst
+++ b/docs/first-build.rst
@@ -67,8 +67,8 @@ and install it::
   $ flatpak-builder --force-clean --user --install-deps-from=flathub --install builddir org.flatpak.Hello.yml
 
 This command will first build each module that is listed in the manifest,
-install them to the ``/app`` subdirectory inside the ``builddir/files``
-directory and finally install the the whole application.
+install the contents of ``builddir/files`` in ``/app`` inside the sandbox
+and finally install the the whole application as a flatpak.
 
 4. Run the application
 ----------------------