diff --git a/doc/conf.py b/doc/conf.py
index c835da8ff01df1ea06cf4e8d28854c05699b60fe..a58e1e426baaeb58340381127abca6e7c01aceed 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -26,6 +26,12 @@ from docutils import nodes
 from sphinx.util.docfields import TypedField
 from sphinx import addnodes
 
+# This shouldn't be needed, as using a virtualenv + setup.py should set up the
+# sys.path correctly. However that seems to be half broken on ReadTheDocs, so
+# manually set it here
+sys.path.insert(0, os.path.abspath('../'))
+
+# Import our packages after modifying sys.path
 import lisa
 
 # This ugly hack is required because by default TestCase.__module__ is
@@ -76,11 +82,6 @@ def patched_make_field(self, types, domain, items, env=None):
 
 TypedField.make_field = patched_make_field
 
-# This shouldn't be needed, as using a virtualenv + setup.py should set up the
-# sys.path correctly. However that seems to be half broken on ReadTheDocs, so
-# manually set it here
-sys.path.insert(0, os.path.abspath('../'))
-
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.