diff --git a/docs/api_boards.rst b/docs/api_boards.rst
index d0649e5..cec9e7e 100644
--- a/docs/api_boards.rst
+++ b/docs/api_boards.rst
@@ -25,7 +25,7 @@ LEDBoard
 LEDBarGraph
 ===========
 
-.. autoclass:: LEDBarGraph(\*pins, initial_value=0)
+.. autoclass:: LEDBarGraph(\*pins, pwm=False, active_high=True, initial_value=0)
     :inherited-members:
     :members: