diff --git a/docs/conf.py b/docs/conf.py
index 11061b7..c8298dd 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -17,7 +17,7 @@
 
 autodoc_member_order = 'bysource'
 
-intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/bus_device/en/latest/', None),'Register': ('https://circuitpython.readthedocs.io/projects/register/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}
+intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/busdevice/en/latest/', None),'Register': ('https://circuitpython.readthedocs.io/projects/register/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']